Translation of Python!
Hello everybody! I want to translate python into albanian language because it's very flexible and similar to english words used in programming.Can anybody help me to start translation of the python the programm used or anything else to get started with programming translation???I can do it by myself but i want the road how to do it???Please help me ! -- https://mail.python.org/mailman/listinfo/python-list
Re: Translation of Python!
Do you mean translating official document? We are translating docs into Japanese using Transifex. https://www.transifex.com/projects/p/python-33-ja/ But I hope PSF have official project on Transifex. On Mon, Jun 30, 2014 at 4:24 PM, Doriven Basha wrote: > Hello everybody! > I want to translate python into albanian language because it's very flexible > and similar to english words used in programming.Can anybody help me to start > translation of the python the programm used or anything else to get started > with programming translation???I can do it by myself but i want the road how > to do it???Please help me ! > -- > https://mail.python.org/mailman/listinfo/python-list -- INADA Naoki -- https://mail.python.org/mailman/listinfo/python-list
[Q] override __init__() method of classes implemented in C
Is it impossible to override __init__() method of classes implemented in C (such as datetime.datetime) ? example.py: from datetime import datetime class Foo(datetime): def __init__(self): pass obj = Foo() Result (Python 2.7.7 and 3.4.1): Traceback (most recent call last): File "hoge.py", line 7, in obj = Foo() TypeError: Required argument 'year' (pos 1) not found It seems to be failed to override datetime.__init__() in subclass. -- regards, makoto kuwata -- https://mail.python.org/mailman/listinfo/python-list
Re: [Q] override __init__() method of classes implemented in C
On Mon, Jun 30, 2014 at 5:45 PM, Makoto Kuwata wrote: > Result (Python 2.7.7 and 3.4.1): > > Traceback (most recent call last): > File "hoge.py", line 7, in >obj = Foo() > TypeError: Required argument 'year' (pos 1) not found > > > It seems to be failed to override datetime.__init__() in subclass. > Actually, __init__ isn't the problem here, __new__ is. class Foo(datetime): def __new__(self): return super().__new__(self,2014,1,1) >>> Foo() Foo(2014, 1, 1, 0, 0) Maybe that helps, maybe it doesn't, but the issue you're seeing is specific to that class. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: [Q] override __init__() method of classes implemented in C
On Mon, Jun 30, 2014 at 4:52 PM, Chris Angelico wrote: > > Actually, __init__ isn't the problem here, __new__ is. > > class Foo(datetime): > def __new__(self): > return super().__new__(self,2014,1,1) > > >>> Foo() > Foo(2014, 1, 1, 0, 0) > > Maybe that helps, maybe it doesn't, but the issue you're seeing is > specific to that class. > Got it! Thank you! -- regards, makoto kuwata -- https://mail.python.org/mailman/listinfo/python-list
Python While loop Takes too much time.
I have did excel automation using python. In my code I am creating python dictionaries for different three columns data at a time.There are are many rows above 4000. Lets have look in below function. Why it is taking too much time? Code: def transientTestDict(self,ws,startrow,startcol): self.hwaDict = OrderedDict() self.yawRateDict = OrderedDict() rng = ws.Cells(startrow,startcol) while not rng.Value is None: r = rng.Row c = rng.Column time = rng.Value rng1 = rng.GetOffset(0,1) hwa = rng1.Value rng2 = rng.GetOffset(0,2) yawrate = rng2.Value self.hwaDict[time] = hwa,rng.Row,rng.Column self.yawRateDict[time] = yawrate,rng.Row,rng.Column rng = ws.Cells(r+1,c) Please have look in above code & suggest me to improve speed of my code. Regards Jaydeep Patil -- https://mail.python.org/mailman/listinfo/python-list
Re: Python While loop Takes too much time.
Jaydeep Patil wrote: > I have did excel automation using python. > In my code I am creating python dictionaries for different three columns > data at a time.There are are many rows above 4000. Lets have look in below > function. Why it is taking too much time? > > Code: > > def transientTestDict(self,ws,startrow,startcol): > > self.hwaDict = OrderedDict() > self.yawRateDict = OrderedDict() > > rng = ws.Cells(startrow,startcol) > > while not rng.Value is None: > r = rng.Row > c = rng.Column > > time = rng.Value > > rng1 = rng.GetOffset(0,1) > hwa = rng1.Value > > rng2 = rng.GetOffset(0,2) > yawrate = rng2.Value > > self.hwaDict[time] = hwa,rng.Row,rng.Column > self.yawRateDict[time] = yawrate,rng.Row,rng.Column > > rng = ws.Cells(r+1,c) > > > > Please have look in above code & suggest me to improve speed of my code. Assuming that what slows down things is neither Python nor Excel, but the communication between these I'd try to do as much as possible in Python. For example (untested): def transientTestDict(self, ws, startrow, startcol): self.hwaDict = OrderedDict() self.yawRateDict = OrderedDict() time_col, hwa_col, yawrate_col = range(startcol, startcol+3) for row in xrange(startrow, sys.maxint): time = ws.Cells(row, time_col).Value if time is None: break hwa = ws.Cells(row, hwa_col).Value yawrate = ws.Cells(row, yawrate_col).Value self.hwaDict[time] = hwa, row, time_col self.yawRateDict[time] = yawrate, row, time_col While this avoids cell arithmetic in Excel it still fetches every value separately, so I have no idea if there is a significant effect. Does Excel provide a means to get multiple cell values at once? That would likely help. -- https://mail.python.org/mailman/listinfo/python-list
Re: [OT] What can Nuitka do?
On 06/28/2014 09:16 AM, Chris Angelico wrote: >> I remember approx. 10 years ago a neighboring dept. at my work effectively >> killed our 10 MB/s Ethernet segment with such traffic (due to a >> misconfigured switch/router?). Running an ethernet analyzer showed a single >> X11 host-server session occupied ~80% bandwidth. AFAICR, it was a Sun >> workstation. >> A real PITA. > > Either that was a horribly inefficient X11 connection (as mine was - > the virtual machine sent basically a constantly-updated bitmapped > image to rdesktop, which then couldn't do anything more efficient than > feed that image to the X server), or something was horribly > misconfigured. I've frequently done much more reasonable X11 > forwarding, with high success and low traffic; Only the most primitive X11 apps are at all fast over network forwarding. If the app uses any modern toolkit, then it's basically just sending a bunch of bitmaps over the wire (changes), which would be fine, but X11 involves a lot of server round trips. Forwarding works fine over SSH on a LAN (compression with -X helps too), but anything slower than that is very nearly unusable. I used to run XEmacs over a modem (I know; I just preferred it to Emacs and I didn't know ViM), and it worked great with server-side drawing and fonts, as X11 was designed to do 90s-style. But now if I need to run X11 apps over a slower link these days I use OpenNX which dramatically helps by eliminating round trips, and applying bitmap compression. But the fact remains X11 kind of sucks these days, and "network transparency" now basically means a slightly suckier version of VNC in effect. RDP protocol is actually much more efficient than X11 forwarding with modern apps. So your rdesktop example is actually not a horribly inefficient X11 connection, other than the fact that X11 is inefficient. Honestly once Wayland has per-app RDP built into it, there'll be no reason at all to cheer for X11. -- https://mail.python.org/mailman/listinfo/python-list
Re: [OT] What can Nuitka do?
On Mon, Jun 30, 2014 at 11:10 PM, Michael Torrie wrote: > Only the most primitive X11 apps are at all fast over network > forwarding. If the app uses any modern toolkit, then it's basically > just sending a bunch of bitmaps over the wire (changes), which would be > fine, but X11 involves a lot of server round trips. Forwarding works > fine over SSH on a LAN (compression with -X helps too), but anything > slower than that is very nearly unusable. I used to run XEmacs over a > modem (I know; I just preferred it to Emacs and I didn't know ViM), and > it worked great with server-side drawing and fonts, as X11 was designed > to do 90s-style. But now if I need to run X11 apps over a slower link > these days I use OpenNX which dramatically helps by eliminating round > trips, and applying bitmap compression. But the fact remains X11 kind > of sucks these days, and "network transparency" now basically means a > slightly suckier version of VNC in effect. RDP protocol is actually > much more efficient than X11 forwarding with modern apps. So your > rdesktop example is actually not a horribly inefficient X11 connection, > other than the fact that X11 is inefficient. Honestly once Wayland has > per-app RDP built into it, there'll be no reason at all to cheer for X11. Hmm. I'm not sure that it's necessarily that bad; I've done 3G-based X11 forwarding fairly successfully on occasion. Yes, it's potentially quite slow, but it certainly works - I've used SciTE, for instance, and I've used some GTK2 apps without problems. What do you mean by "modern toolkit"? ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Creating a dict-like class that counts successful and failed key matches
As a diagnostic tool, I would like to create a dict-like class that counts successful and failed key matches by key. By failed I mean in the sense that a default value was returned vs. an exception raised. By count, I mean by tracking counts for individual keys vs. just total success/failure counts. The class needs to support setting values, retrieving values, and retrieving keys, items, and key/item pairs. Basically anything that a regular dict, I'd like my modified class to do as well. Use case: I'm curious to see what key's we're missing that our code is using default to provide and I'm also interested in looking at our high frequency keys as a way to double check our processes. Is this a common pattern covered by the standard lib (I don't see anything in collections)? I'm looking for ideas on how to implement ... as a subclass of Dict, as a duck-like class offering Dict like methods, other? I'm also looking for some hints on what magic methods I should override to accomplish my goal, eg. beyond __getitem__. Thank you, Malcolm -- https://mail.python.org/mailman/listinfo/python-list
Re: Creating a dict-like class that counts successful and failed key matches
After some additional research, it looks like I may have even more options to consider including using a UserDict mixin. I think I've identified another magic method to subclass ... __missing__. - Original message - From: [1]pyt...@bdurham.com To: [2]python-list@python.org Subject: Creating a dict-like class that counts successful and failed key matches Date: Mon, 30 Jun 2014 09:43:49 -0400 As a diagnostic tool, I would like to create a dict-like class that counts successful and failed key matches by key. By failed I mean in the sense that a default value was returned vs. an exception raised. By count, I mean by tracking counts for individual keys vs. just total success/failure counts. The class needs to support setting values, retrieving values, and retrieving keys, items, and key/item pairs. Basically anything that a regular dict, I'd like my modified class to do as well. Use case: I'm curious to see what key's we're missing that our code is using default to provide and I'm also interested in looking at our high frequency keys as a way to double check our processes. Is this a common pattern covered by the standard lib (I don't see anything in collections)? I'm looking for ideas on how to implement ... as a subclass of Dict, as a duck-like class offering Dict like methods, other? I'm also looking for some hints on what magic methods I should override to accomplish my goal, eg. beyond __getitem__. Thank you, Malcolm -- [3]https://mail.python.org/mailman/listinfo/python-list References 1. mailto:pyt...@bdurham.com 2. mailto:python-list@python.org 3. https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Re: Creating a dict-like class that counts successful and failed key matches
On Mon, Jun 30, 2014 at 11:43 PM, wrote: > As a diagnostic tool, I would like to create a dict-like class that counts > successful and failed key matches by key. By failed I mean in the sense that > a default value was returned vs. an exception raised. By count, I mean by > tracking counts for individual keys vs. just total success/failure counts. > The class needs to support setting values, retrieving values, and retrieving > keys, items, and key/item pairs. Basically anything that a regular dict, I'd > like my modified class to do as well. Sounds like you want to subclass dict, then. Something like this: class StatsDict(dict): def __init__(self, *a, **ka): super().__init__(*a, **ka) self.success = defaultdict(int) self.fail = defaultdict(int) def __getitem__(self, item): try: ret = super().__getitem__(item) self.success[item] += 1 return ret except KeyError: self.fail[item] += 1 raise On initialization, set up some places for keeping track of stats. On item retrieval (I presume you're not also looking for stats on item assignment - for that, you'd want to also override __setitem__), increment either the success marker or the fail marker for that key, based exactly on what you say: was something returned, or was an exception raised. To get the stats, just look at the success and fail members: >>> d = StatsDict() >>> d["foo"]=1234 >>> d["foo"] 1234 >>> d["spam"] (chomp) KeyError: 'spam' >>> d["foo"] 1234 >>> d["foo"] 1234 >>> d["test"] (chomp) KeyError: 'test' >>> len(d.success) # Unique successful keys 1 >>> len(d.fail) # Unique failed keys 2 >>> sum(d.success.values()) # Total successful lookups 3 >>> sum(d.fail.values()) # Total unsuccessful lookups 2 You can also interrogate the actual defaultdicts, eg to find the hottest N keys. For everything other than simple key retrieval, this should function identically to a regular dict. Its repr will be a dict's repr, its iteration will be its keys, all its other methods will be available and won't be affected by this change. Notably, the .get() method isn't logged; if you use that and want to get stats for it, you'll have to reimplement it - something like this: def get(self, k, d=None): try: return self[k] except KeyError: return d The lookup self[k] handles the statisticking, but if you let this go through to the dict implementation of get(), it seems to ignore __getitem__. This probably isn't exactly what you want, but it's a start, at least, and something to tweak into submission :) ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Creating a dict-like class that counts successful and failed key matches
Hi Chris, > Sounds like you want to subclass dict, then. Something like this: Nice!!! I need to study your solution, but at first blush it looks exactly like what I wanted to implement. Thank you! Malcolm -- https://mail.python.org/mailman/listinfo/python-list
Re: Creating a dict-like class that counts successful and failed key matches
On 06/30/2014 07:44 AM, pyt...@bdurham.com wrote: Nice!!! I need to study your solution, but at first blush it looks exactly like what I wanted to implement. Keep in mind that dict /will not/ call your overridden methods, so if, for example, you provide your own __getitem__ you will also need to provide your own copies of any dict method that calls __getitem__. -- ~Ethan~ -- https://mail.python.org/mailman/listinfo/python-list
Re: Creating a dict-like class that counts successful and failed key matches
Ethan, > Keep in mind that dict /will not/ call your overridden methods, so if, for > example, you provide your own __getitem__ you will also need to provide your own copies of any dict method that calls __getitem__. I'm not sure I understand. Are you saying that Chris's __getitem__ will not be called by other dict methods that would normally call this magic method and instead call the parent's __getitem__ directly (via super() or something similar?)? Is this specific to the native Dict class (because its implemented in C vs. Python?) or is this behavior more general. Malcolm -- https://mail.python.org/mailman/listinfo/python-list
Re: Creating a dict-like class that counts successful and failed key matches
On 06/30/2014 09:47 AM, pyt...@bdurham.com wrote: Keep in mind that dict /will not/ call your overridden methods, so if, for example, you provide your own __getitem__ you will also need to provide your own copies of any dict method that calls __getitem__. I'm not sure I understand. Are you saying that Chris's __getitem__ will not be called by other dict methods that would normally call this magic method and instead call the parent's __getitem__ directly (via super() or something similar?)? That is what I am saying. Is this specific to the native Dict class (because its implemented in C vs. Python?) or is this behavior more general. I /think/ it's only dict, but I haven't played with subclassing lists, tuples, etc. It's not a C vs Python issue, but a 'implemented with __private methods' issue. From what I have seen so far in the confusion and frustration that decision has caused, I do not think it was a good one. :( -- ~Ethan~ -- https://mail.python.org/mailman/listinfo/python-list
Re: Python While loop Takes too much time.
On Monday, June 30, 2014 1:32:23 PM UTC+2, Jaydeep Patil wrote: > I have did excel automation using python. > > In my code I am creating python dictionaries for different three columns data > at a time.There are are many rows above 4000. Lets have look in below > function. Why it is taking too much time? > > > > Code: > > > > def transientTestDict(self,ws,startrow,startcol): > > > > self.hwaDict = OrderedDict() > > self.yawRateDict = OrderedDict() > > > > rng = ws.Cells(startrow,startcol) > > > > while not rng.Value is None: > > r = rng.Row > > c = rng.Column > > > > time = rng.Value > > > > rng1 = rng.GetOffset(0,1) > > hwa = rng1.Value > > > > rng2 = rng.GetOffset(0,2) > > yawrate = rng2.Value > > > > self.hwaDict[time] = hwa,rng.Row,rng.Column > > self.yawRateDict[time] = yawrate,rng.Row,rng.Column > > > > rng = ws.Cells(r+1,c) > > > > > > > > Please have look in above code & suggest me to improve speed of my code. > > > > > > > > Regards > > Jaydeep Patil Hi Jaydeep, I agree with Peter. I would avoid moving from cell to cell through the EXCEL interface if you can avoid. If possible, I would try to read ranges from EXCEL into a python list (or maybe numpy arrays) and do the processing in Python. In the past I even dumped an EXCEL sheet as a CSV file and then used the numpy recfromcsv function to process the data. If you are really brave, dump EXCEL alltogether :) and do all the work in Python (have you already tried IPython notebook?). Regards, Marco -- https://mail.python.org/mailman/listinfo/python-list
Re: Translation of Python!
I want to translate it into my language like the chinese python https://code.google.com/p/zhpy/w/list?q=label:Chinese can you help me? -- https://mail.python.org/mailman/listinfo/python-list
Re: Translation of Python!
On Monday, June 30, 2014 8:37:43 PM UTC+2, Doriven Basha wrote: > I want to translate it into my language like the chinese python > https://code.google.com/p/zhpy/w/list?q=label:Chinese > > can you help me? -- https://mail.python.org/mailman/listinfo/python-list
unorderable error: less ok, equal ok, less-or-equal gives unorderable error!
Hi, in python 3.4.1, I get this surpising behaviour: >>> l=Loc(0,0) >>> l2=Loc(1,1) >>> l>l2 False >>> l>> l<=l2 Traceback (most recent call last): File "", line 1, in TypeError: unorderable types: Loc() <= Loc() >>> l==l2 False >>> lhttps://mail.python.org/mailman/listinfo/python-list
Re: Writing Multiple files at a times
On Sunday, June 29, 2014 4:19:27 PM UTC+5:30, subhaba...@gmail.com wrote:
> Dear Group,
>
>
>
> I am trying to crawl multiple URLs. As they are coming I want to write them
> as string, as they are coming, preferably in a queue.
>
>
>
> If any one of the esteemed members of the group may kindly help.
>
>
>
> Regards,
>
> Subhabrata Banerjee.
Dear Group,
Thank you for your kind suggestion. But I am not being able to sort out,
"fp = open( "scraped/body{:0>5d}.htm".format( n ), "w" ) "
please suggest.
Regards,
Subhabrata Banerjee.
--
https://mail.python.org/mailman/listinfo/python-list
Re: unorderable error: less ok, equal ok, less-or-equal gives unorderable error!
RainyDay wrote: > Hi, in python 3.4.1, I get this surpising behaviour: > l=Loc(0,0) l2=Loc(1,1) l>l2 > False l True l<=l2 > Traceback (most recent call last): > File "", line 1, in > TypeError: unorderable types: Loc() <= Loc() l==l2 > False l True > > Loc implements both __lt__ and __eq__, which should be enough (?), These two methods should be sufficient if you use the functools.total_ordering class decorator, see https://docs.python.org/dev/library/functools.html#functools.total_ordering > but even after I've added __lte__, I still have the error. There is no special method of that name; it should probably be __le__(). > > implementation: > > class Loc: > def __init__(self, x, y): > self._loc = x, y > self.x, self.y = x, y > > def __eq__(self, other): > return self._loc == getattr(other, "_loc", None) Note that None is not a good default when _loc is expected to be a tuple: >>> None < () Traceback (most recent call last): File "", line 1, in TypeError: unorderable types: NoneType() < tuple() > > def __lt__(self, other): > return self._loc < other._loc > > - andrei -- https://mail.python.org/mailman/listinfo/python-list
Re: Creating a dict-like class that counts successful and failed key matches
Ethan, >> Is this specific to the native Dict class (because its implemented in C vs. >> Python?) or is this behavior more general. > I /think/ it's only dict, but I haven't played with subclassing lists, > tuples, etc. It's not a C vs Python issue, but a 'implemented with __private methods' issue. From what I have seen so far in the confusion and frustration that decision has caused, I do not think it was a good one. :( Thanks for the heads-up! Malcolm -- https://mail.python.org/mailman/listinfo/python-list
Writing files at run time
Dear Group, In my previous post["https://groups.google.com/forum/#!topic/comp.lang.python/ZYjsskV5MgE";] I was trying to discuss some issue on file writing. I got an associated issue. I am trying to crawl a link, through urllib and trying to store its results in different files. As discussed I could work out a solution for this and with your kind help trying to learn some new coding styles. Now, I am getting an associated issue. The crawler I am trying to construct would run daily-may be at a predefined time. [I am trying to set the parameter with "time" module]. Now, in the file(s) data are stored, are assigned or created at one time. Data changes daily if I crawl daily newspapers. I generally change the name of the files with a sitting for few minutes before a run. But this may not be the way. I am thinking of a smarter solution. If anyone of the esteemed members may kindly show a hint, how the name of the storing files may be changed automatically as crawler runs every day, so that data may be written there and retrieved. Thanking you in advance, Regards, Subhabrata Banerjee. -- https://mail.python.org/mailman/listinfo/python-list
Re: Translation of Python!
On 06/30/2014 12:37 PM, Doriven Basha wrote: > I want to translate it into my language like the chinese python > https://code.google.com/p/zhpy/w/list?q=label:Chinese can you help > me? I don't understand chinese, so I am not sure what this web page is about. Do you want to translate Python's messages (error tracebacks, etc) into Romanian? Or are you wanting to create a language that uses Python syntax but with Romanian keywords replacing english ones like if, else, while, def, etc? -- https://mail.python.org/mailman/listinfo/python-list
Re: unorderable error: less ok, equal ok, less-or-equal gives unorderable error!
On Monday, June 30, 2014 3:34:25 PM UTC-4, Peter Otten wrote: > RainyDay wrote: > > > > > Hi, in python 3.4.1, I get this surpising behaviour: > > > > > l=Loc(0,0) > > l2=Loc(1,1) > > l>l2 > > > False > > l > > True > > l<=l2 > > > Traceback (most recent call last): > > > File "", line 1, in > > > TypeError: unorderable types: Loc() <= Loc() > > l==l2 > > > False > > l > > True > > > > > > Loc implements both __lt__ and __eq__, which should be enough (?), > > > > These two methods should be sufficient if you use the > > functools.total_ordering class decorator, see Thanks! I literally failed to read one more paragraph in a SO answer which referenced this decorator. I really need to start reading those paragraphs, they often provide answers... > > but even after I've added __lte__, I still have the error. > > > > There is no special method of that name; it should probably be __le__(). Right, I used lte in django and assumed they were consistent with python. > > def __eq__(self, other): > > > return self._loc == getattr(other, "_loc", None) > > > > Note that None is not a good default when _loc is expected to be a tuple: > I'm only using None in equality comparison, it's never a default value of _loc itself, so this should be ok because it'll compare to all other object types and correctly say they're unequal. - andrei -- https://mail.python.org/mailman/listinfo/python-list
Re: unorderable error: less ok, equal ok, less-or-equal gives unorderable error!
On 06/30/2014 12:34 PM, Peter Otten wrote: RainyDay wrote: def __eq__(self, other): return self._loc == getattr(other, "_loc", None) Note that None is not a good default when _loc is expected to be a tuple: In this case None is not being returned, but will be comparid with self._loc, so RainyDay is good there. -- ~Ethan~ -- https://mail.python.org/mailman/listinfo/python-list
Re: Creating a dict-like class that counts successful and failed key matches
On Tue, Jul 1, 2014 at 2:47 AM, wrote: > I'm not sure I understand. Are you saying that Chris's __getitem__ will > not be called by other dict methods that would normally call this magic > method and instead call the parent's __getitem__ directly (via super() > or something similar?)? He's pointing out the general principle behind what I said about the .get() method; if you don't override .get() with your own implementation, it won't pass the request through your __getitem__, so it won't be statistically analyzed. That might be a good thing; it means you're going to have to be explicit about what gets counted. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Writing Multiple files at a times
On Mon, 30 Jun 2014 12:23:08 -0700, subhabangalore wrote:
> Thank you for your kind suggestion. But I am not being able to sort out,
> "fp = open( "scraped/body{:0>5d}.htm".format( n ), "w" ) "
> please suggest.
look up the python manual for string.format() and open() functions.
The line indicated opens a file for write whose name is generated by the
string.format() function by inserting the number N formatted to 5 digits
with leading zeroes into the string "scraped/bodyN.htm"
It expects you to have a subdir called "scraped" below the dir you're
executing the code in.
Also, this newsgroup is *NOT* a substitute for reading the manual for
basic python functions and methods.
Finally, if you don't understand basic string and file handling in
python, why on earth are you trying to write code that arguably needs a
level of competence in both? Perhaps as your starter project you should
try something simpler, print "hello world" is traditional.
To understand the string formatting, try:
print "hello {:0>5d} world".format( 5 )
print "hello {:0>5d} world".format( 50 )
print "hello {:0>5d} world".format( 500 )
print "hello {:0>5d} world".format( 5000 )
print "hello {:0>5d} world".format( 5 )
--
Denis McMahon, denismfmcma...@gmail.com
--
https://mail.python.org/mailman/listinfo/python-list
Validating Data Extracted from Files
Hi, I'm sourcing data from multiple excel files (workbooks) each with multiple worksheets. Prior to persisting the aggregated data, I want to validate it. I was thinking of creating classes to hold the data and validate type and content via methods. I'd appreciate feedback on this approach, suggestions on possibly better alternatives, and if there are existing libraries that provide this functionality. Thanks. Best, Ari -- https://mail.python.org/mailman/listinfo/python-list
Re: Python While loop Takes too much time.
marco.naw...@colosso.nl wrote: In the past I even dumped an EXCEL sheet as a CSV file That's probably the only way you'll speed things up significantly. In my experience, accessing Excel via COM is abysmally slow no matter how you go about it. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re:Writing files at run time
subhabangal...@gmail.com Wrote in message: > Dear Group, > > In my previous > post["https://groups.google.com/forum/#!topic/comp.lang.python/ZYjsskV5MgE";] > I was trying to discuss some issue on file writing. > > I got an associated issue. > > I am trying to crawl a link, through urllib and trying to store its results > in different files. As discussed I could work out a solution for this and > with your kind help trying to learn some new coding styles. > > Now, I am getting an associated issue. > > The crawler I am trying to construct would run daily-may be at a predefined > time. > [I am trying to set the parameter with "time" module]. > > Now, in the file(s) data are stored, are assigned or created at one time. > > Data changes daily if I crawl daily newspapers. > > I generally change the name of the files with a sitting for few minutes > before a run. But this may not be the way. > > I am thinking of a smarter solution. > > If anyone of the esteemed members may kindly show a hint, how the name of the > storing files may be changed automatically as crawler runs every day, so that > data may be written there and retrieved. > > Thanking you in advance, > Regards, > Subhabrata Banerjee. > > Make a directory name from datetime. datetime. now () and put the files there. -- DaveA -- https://mail.python.org/mailman/listinfo/python-list
Re: Translation of Python!
On Mon, 30 Jun 2014 14:24:46 -0600, Michael Torrie wrote: > On 06/30/2014 12:37 PM, Doriven Basha wrote: >> I want to translate it into my language like the chinese python >> https://code.google.com/p/zhpy/w/list?q=label:Chinese can you help me? > > I don't understand chinese, so I am not sure what this web page is > about. Do you want to translate Python's messages (error tracebacks, > etc) into Romanian? Doriven is Albanian, not Romanian. > Or are you wanting to create a language that uses > Python syntax but with Romanian keywords replacing english ones like if, > else, while, def, etc? Yes, that's what ChinesePython does: http://reganmian.net/blog/2008/11/21/chinese-python-translating-a-programming-language/ http://www.chinesepython.org/english/english.html For what it's worth, when this came up on the Python-Dev mailing list a few years ago, Guido gave his blessing to the idea. I don't know how ChinesePython does it, but if I were doing this, I would use a pre-processor that translates custom source code into Python. Here are two joke languages that do something similar: http://www.dalkescientific.com/writings/diary/archive/2007/06/01/lolpython.html http://www.staringispolite.com/likepython/ -- Steven -- https://mail.python.org/mailman/listinfo/python-list
Re: [OT] What can Nuitka do?
On 06/30/2014 07:36 AM, Chris Angelico wrote: > Hmm. I'm not sure that it's necessarily that bad; I've done 3G-based > X11 forwarding fairly successfully on occasion. Yes, it's potentially > quite slow, but it certainly works - I've used SciTE, for instance, > and I've used some GTK2 apps without problems. What do you mean by > "modern toolkit"? Modern toolkit is defined as anything that uses client-side rendering. In the good old days of Motif and Xaw widgets, if a program wanted to draw, the toolkit would instruct the server to draw primitives. Rectangles, lines, etc. Each widget would be created in its own window, and events would be all handled on the server. Unfortunately we quickly hit some limits with that idea, as good and fast as it was. First of all, anti-aliased fonts were difficult to accomplish. There were hacks to do this early on, but it quickly became apparent that the actual application could do a better job of it if it would just do the rendering itself and have the X server draw it. Not only anti-aliased fonts, but also when you start talking about wanting to do layered effects like alpha-blending. All of this the app could do better and more efficiently than the X server could, since the X server would have had to round-trip to the app anyway to get the information since the X server is in a different process (or different computer) and cannot access the memory the app is using to store things. Kieth Packard wrote some X extensions to allow client-side rendering to be efficient and to let the X server to handle RGBA images, and to composite them together. Also, events in modern toolkits are done very differently than the original X toolkits. Instead of using multiple windows, clients now just establish one window and then handle events and figure out what widgets should receive the events client-side instead of server-side. This allows handling of things like scrollable canvases. Anyway, all of this improved the behavior and appearance of applications. When used locally, shared memory facilities make X pretty fast, although latency is still quite high. There's no way to synchronize frame redraws, so apps tear and stutter when you drag and resize. But over a network now, the nature of the X protocol means a lot of round-trips to the server to do things. This is very apparent when you run on a very slow connection. You might see widgets get drawn, then erase, then drawn again. Using a complex app like firefox, which has another layer of abstraction over GTK that makes it even worse, is very difficult on anything less than a LAN. Or try a Java Swing app! I've done it on occasion. I'd rather run Xvnc on the remote host and vnc in than forward X. FreeNX makes things very usable. http://en.wikipedia.org/wiki/NX_technology describes how NX works. I love that X11 apps work over a forward connection. And I love that I can run a remote window manager on a local X server if I wanted to. But I recognize X has it's problems and I can see how Wayland will eventually be so much better while still letting me remote apps, which is essential to me. -- https://mail.python.org/mailman/listinfo/python-list
Re: [OT] What can Nuitka do?
I highly recommend the talk by Daniel Stone who used to be a core X.org developer. He explains it quite well how X is used currently, and why it has problems and why they are considered so hard to fix that Wayland (and Mir) was created. https://www.youtube.com/watch?v=RIctzAQOe44 One interesting point he made was the X server is no longer network transparent like it used to be. It is network capable now but when used in that way (ssh forwarding), it's essentially done in the same way as VNC, but more poorly because of the way X11 is architected. -- https://mail.python.org/mailman/listinfo/python-list
