Piet van Oostrum writes:
> doganad...@gmail.com writes:
>
>> I dont know much about scala actually. I have just have tried to give
>> 0.0001 and it returned a presentation with an 'e' .whereas python takes
>> 0.0001 and gives 0.0001 . it made me think python is
doganad...@gmail.com writes:
> I dont know much about scala actually. I have just have tried to give
> 0.0001 and it returned a presentation with an 'e' .whereas python takes
> 0.0001 and gives 0.0001 . it made me think python is better in that
> specific subject.
>
> However, python though starts
doganad...@gmail.com writes:
>
> In the meanwhile I have checked Scala , and it's more limited then Python.
> As an example:
> 0.0001
> 1.0E-4: Double
>
Why do you think this means Scala is more limited than Python?
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Martin Schöön writes:
> Den 2019-10-15 skrev Piet van Oostrum :
>>
>> What does this report? Compare if there is a difference between home and
>> work.
>>
>> from jupyter_core.paths import jupyter_path
>> print(jupyter_path('notebook','
n making hasty subdivisions.
In this context that means attributes (that can be None) rather than subclasses.
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hat is called IDLE. It is simpler than Pycharm, but it can
do the job. So you can try that. If that also gives an error you could try to
reinstall Python.
If you are familiar with the command line, then that is also a possibility.
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Martin Schöön writes:
> Den 2019-10-13 skrev Piet van Oostrum :
>> Martin Schöön writes:
>>
>>> Is there a way to do "Download as PDF" and get A4 pages instead
>>> of Letter? Yes, I know I can do "Download as LaTeX" and edit the
>>
>
you prefer that.
You can leave out the c.LatexExporter.template_file line if you don't want the
LaTeX exporter to generate A4.
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at's going on?
>>> Foo.__abstractmethods__
Traceback (most recent call last):
File "", line 1, in
AttributeError: __abstractmethods__
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d probably want to generate a PDF file and send that to the
printer, possibly with the use of LaTeX.
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about (5,7), (5,8) and (6,8)?
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here is some working code:
def PReader(csvfile):
import re
for line in csvfile:
line = re.sub(r'\(.*?\)', '"\g<0>"', line)
yield line
import csv
with open('testcsv.csv') as csvfile:
reader = csv.reader(PReader(csvfile), quot
; I found that it also works without the letter b.
>
I added the b because the default in the definition of read_csv is b'.', but
you are right, it works with just ','.
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cation in dataframe before extracting the numeric fields to the
> array.
>
> Please, any comments or tip?
data = pd.read_csv ('table.csv', sep = ',', skiprows = 1, decimal=b',',
skipinitialspace=True)
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code the error is on line 15
1) What is line 15?
2) Always copy/paste the complete error message with your question.
3) Your with body is not indented:
with fits.open(fits_filename) as data:
df=pd.DataFrame(data[1].data)
df.columns=[c.lower() for c in df.columns]
print(&
acility. When a compound statement is entered interactively, it must be
followed by a blank line to indicate completion (since the parser cannot guess
when you have typed the last line). Note that each line within a basic block
must be indented by the same amount.
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gt; |>>> re.search( pattern, '1234' ).group( 1 )
> |IndexError: no such group
> |>>> re.search( pattern2, '1234' ).group( 1 )
> |>>>
>
The second pattern has parentheses, hence a group. The first doesn't.
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gt; Confused
>
> Sayth
df1['Difference'] = df1['Current Team'].str.lower().str.strip() ==
df1['New Team'].str.lower().str.strip()
works on whole columns, not only on an individual row.
xls = pd.ExcelFile("Melbourne.xlsx")
df = xls.par
print(add_vat(101, 'low'))
>
> Outcome:
>
> 122.21
> 110.09
>
> Thanks!
You could use a dictionary to connect the words to the values.
As this is homework you have to do it yourself. Learn about dictionaries.
Otherwise just use 'if'.
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')
> 27
> ---> 28 my_data_3 = int(my_data_2)
> 29
> 30 my_data_4 = my_data_3.astype(np.float)
> TypeError: only length-1 arrays can be converted to Python scalars
> #
>>> my_data_2 = numpy.array(['0a&#
actually treated this as a CSV file.
2) As I said above, if you choose ',' as separator, these will disappear.
Similarly, if you choose TAB as seperator, the TABs will disappear. As the
format is a strange mixture of the two, you can use either one. But if it would
be read with a real
Piet van Oostrum writes:
> That would select ROWS 0,1,5,6,7, not columns.
> To select columns 0,1,5,6,7, use two-dimensional indexes
>
> df1 = df.iloc[:, [0,1,5,6,7]]
>
> : selects all rows.
And that also solves your original problem.
This statement:
df1['Difference&#x
grab all columns 13 when I requested 5.
> UID Name FTE Agent ID Current Leader New Leader Current Team New
> Team Current Site New Site Unnamed: 10 Unnamed: 11 Unnamed: 12
>
> How do I misunderstand iloc?
>
That would select ROWS 0,1,5,6,7, not columns.
To select columns 0,1,5,6
I couldn’d find the IDLE shell
> with them.
Well, on MacOS 10.13.6 (High Sierra) tensorflow 1.14.0 does install on Python
3.7.4, and it also runs. It does give some warnings about deprecations, however.
There is also a version 2.0RC which installs and runs without warnings.
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;)
False
In [3]: if var is not None:
...: print('True')
...: else:
...: print('False')
True
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at 'Current Team' is spelled differently in the assignment
than in the construction of df1? For example a difference in spaces, like a
triling space or a breaking vs. non-breaking space? Please check that both are
exactly the same.
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t there is no guarantee. It depends on
garbage collection.
In your case the file will not be closed as long as there is still a reference
to it (as in f). When f disappears and all copies of it as well, the file COULD
be closed similarly.
On the other hand, the with statement guarantees that
oc['New Team'].str.lower().str.strip()
>
> But on both occasions I receive this error.
>
> # KeyError: 'the label [Current Team] is not in the [index]'
>
> if I test df1 before trying to create the new column it works just fine.
>
> Sayth
What
Piet van Oostrum writes:
> So the correct way to do this is to make df1 a copy rather than a view.
>
> df1 = df.loc[:, ('UID','Name','New Leader','Current Team', 'New Team')]
Or maybe even make an explicit copy:
df1 = df[['UID&#
27;New Team')]
And than it should work.
Except that the str.replace is wrong for what you want. It just replaces the
literal string "s/+" with an empty string instead of white space. This was
wrong in the stackoverflow post.
To replace whitespace it should be str.replace(
the y is basically part of an expression. But starred expressions are not
allowed in expressions, except within explicit parentheses.
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hat
model.py wasn't found in classes, i.e. it was the same error as Peter got.
So to get this working you must make sure 'classes' is inside a directory that
is in sys.path, for example by adding:
sys.path.insert(0, '..')
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t(int)
The value of int is the class int, which is the class of 5, so type(5) is also
that same class int.
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ainer.find('div', attrs={'class':'item-branding'})
> price = container.find('div', attrs={'class':'item-action'})
> records.append((brand, price))
>
When I put this in a python file, and run it under python3.7, it work
o to get the names?!
python3
>>> x = '\xce\x86\xce\xba\xce\xb7\xcf\x82
>>> \xce\xa4\xcf\x83\xce\xb9\xce\xac\xce\xbc\xce\xb7\xcf\x82'
>>> b = bytes(ord(c) for c in x)
>>> b.decode('utf-8')
'Άκης Τσιάμης'
>>>
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ce.
>
> Christian
Even simpler:
>>> help(len)
help(len)
Help on built-in function len in module builtins:
len(obj, /)
Return the number of items in a container.
both in python 3.6 and 3.7.
This is weird.
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; f( x; y )
>
> (the actual call still would use a comma there).
>
What are you talking about? What documentation? It seems to me you are talking
about a completely different programming language, not python.
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('testcsv.csv', newline='') as csvfile:
reader = csv.reader(csvfile, delimiter='\t')
for row in reader:
for i in range(2, 5):
row[i] = float(row[i])
print(row)
You could convert the first two columns to datetime format if you wish.
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`
> After migrating from python 3.4.1 to python 3.6.6
> while Executing my project, I'm facing this issue and not able to
> resolve it. Can i get any solution for this issue?
Could it be that your PYTHONPATH environment variable is set to a directory i
Or I could first try to switch to Python 3, as Chris suggested, to see if that
makes the problem disappear.
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File
"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py",
line 121, in _eintr_retry_call
return func(*args)
OSError: [Errno 22] Invalid argument
TASK is a string with the name of the shell script.
Can anybody shed some light on this?
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Exception as e:
print "%s: %s" % (type(e).__name__, ', '.join(e.args))
>>> literal("'x':1")
{'x': 1}
>>> literal("x:1")
ValueError: malformed string
But in non-interactive use you probably want to propagate the exception.
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h tape.
> By backstepping and punching a DEL over the previous ASCII character you
> can "rub out" the character.
>
Sure, I have done that many times. Years ago.
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Ho Yeung Lee writes:
> which function should be used for this problem?
>
I think it is a kind if clustering, or a connectivity problem. There are
special algorithms for that, not just a simple function. Maybe scikit-learn has
a suitable algorithm for it.
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t in such a way thet points that are close together
in the two-dimensional sense will also be close together in the
one-dimensional list. But that is impossible.
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ost recent call last):
> File "submission.py", line 61, in __init__
> self.cloc=Location(center_loc)
> TypeError: __init__() missing 1 required positional argument: 'y'
Location must be called with 2 parameters: a x and a y coordinate, not
with another location a
,6),(4,6)]
>
> for key, group in groupby(items, key=PairKey(isneighborlocation)):
> print key, list(group)
>
> $ python sequential_group_class.py
> False [(1, 1)]
> True [(2, 3), (2, 4)]
> False [(3, 5), (3, 6), (4, 6)]
That only works if
(a) The elements in the list
'}
> raw_html = requests.get(url, headers=headers)
>
> raw_data = raw_html.text
> soup_data = BeautifulSoup(raw_data, "lxml")
>
> td = soup_data.findAll('tr')[1:]
>
> country = []
>
> for data in td:
> col = data.find_all('td')
>
Vincent Vande Vyvre writes:
> final = [(x, y+1) for x, y in zip(e, e)]
final = [(x, x+1) for x in e]
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'. It would be nice if python had a real 'let'
construction. Or for example:
[(tmp, tmp + 1) for x in data with tmp = expensive_calculation(x)]
Alas!
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call after each print statement, like
sys.stdout.flush()
Then you get them in order.
$ python3 subprc.py
a
b
c
d
Of course you won't be able to tell from which stream each line comes.
The streams are byte streams, not message streams. You would have to put
extra information, e.g. a prefix, in your print statements.
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n be simplified to just:
if errors:
This is quite usual in Python, but some people prefer the more elaborate form,
or something like:
if len(errors) == 0:
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. What command did you use and
what was the result?
[Maybe you tried to include images in your post/mail but they did not come
through. Just copy/paste the text.]
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e("0", 'string', "eval")
t1 = Timer("eval(dummy); func()", setup="from __main__ import dummy, func")
t2 = Timer("0; eval(code)", setup="from __main__ import code")
And then you'll see that t1 is slightly slower than t2.
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t of it; but
> we already have it built in :-)
There is a use case for a singleton class: when creating the singleton
object takes considerable resources and you don't need it always in your
program.
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Vinay Sajip writes:
> A new version of the Python module which wraps GnuPG has been
> released.
>
There seem to be 2 gnupg modules for Python. The other one has version number
1.2.5. Very confusing!
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der.com
>
I seriously think jmf has a mental disorder. So these reactions won't do
anything useful. Just ignore.
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xtract an element of a list use indexing, like mylist[0].
If you don't know these things or can't find this out yourself, you have a
serious lack of knowledge about Python, or maybe about programming, and it is
time to learn that first.
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wxjmfa...@gmail.com writes:
> In fact, Python just becomes the last tool I (would)
> recommend, especially for non-ascii users.
>
> jmf
In fact, Python 3 is one of the best programming tools for non-ASCII users.
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of
a sequence/iterator. There is no way to bind the name(s) to a single
object other than putting that object in a one element sequence. I was
just looking for a way to avoid that. Functional programming languages
have a way to do this with the 'let' or 'where' construction
where (sic!) the last part means as much as
where _, mn, dy, _, _, _, wd, _, _ = localtime(then)
I find the list comprehension preferable because it makes it more clear
that a new list is constructed from an existing list, something that is
not as immediately clear with the append construction.
Alain Ketterlin writes:
> Piet van Oostrum writes:
> [...]
>> Python misses a 'where' or 'let'-like construction as in Haskell.
>
> "let x = v in e" really is (lambda x:e)(v)
>
You are right, but it is a lot less readable IMHO.
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Rustom Mody writes:
> On Saturday, January 18, 2014 4:49:55 AM UTC+5:30, Piet van Oostrum wrote:
[...]
>
>> Python misses a 'where' or 'let'-like construction as in Haskell.
>
> +1
> Yes Ive often been bitten by the lack of a 'comprehension-let
_, mn, dy, _, _, _, wd, _, _ in [localtime(then)]]
Python misses a 'where' or 'let'-like construction as in Haskell.
Anybody has a more elegant solution?
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Travis Griggs writes:
> Personally, I wish they’d start python4, sure would take the heat out of
> the 3 vs 2 debates. And maybe there’d be a program called twentyfour as
> a result.
twelve would be sufficient, I would think.
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t.
m4_treap.m4 contains this instruction twice:
ifdef(/*pyx*/,cp)if current is None:
ifdef(/*pyx*/,cp)raise KeyError
Which when generating pyx_treap.pyx (with *pyx* defined) expands to the
syntactically incorrect
cpif current is None:
cpraise KeyError
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Ian Kelly writes:
> I suggest defining x as a normal function and writing the assignment
> as "Foo.x = staticmethod(x)" to keep x callable from the global
> namespace. Or just del it after doing the monkey patch.
You can use Foo.x = staticmethod(lambda: 2)
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narrow-minded and Unicode
> illiterate. They are neither of these things.
>
> Continuing to post these comments with no interest in learning is rude.
> Other recent threads have contained details rebuttals of your views,
> which you have ignored. This is rude. Please stop.
Please ign
Chris Angelico writes:
> On Fri, Jan 10, 2014 at 1:06 AM, Piet van Oostrum wrote:
>> Chris Angelico writes:
>>
>>> On Thu, Jan 9, 2014 at 2:34 PM, Ben Finney
>>> wrote:
>>>> With time zones, as with text encodings, there is a single technically
; elegant solution (for text: Unicode; for time zones: twelve simple,
>> static zones that never change)
>
> Twelve or twenty-four? Or are you thinking we should all be an even
> number of hours away from UTC, which would also work?
Even 24 doesn't take into account DST.
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utc from the doc and use
that:
from datetime import tzinfo, timedelta, datetime
ZERO = timedelta(0)
class UTC(tzinfo):
"""UTC"""
def utcoffset(self, dt):
return ZERO
def tzname(self, dt):
return "UTC"
def dst(self, dt):
r
information with it also (and then it would be partly a Django problem
because you would get the user id from Django).
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";"+r1
>
> f=open("test.txt","r")
> conten = f.read()
> print conten
> f.close()
>
> #f=open("test.txt","a")
> #f.write(infos)
> #f.write('\n')
> #f.close()
>
>
> thank you =)
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of 1 sec s.settimeout() call after the send call but it
> doesnot help.
>
> I tried by commenting s.close() still it did not work.
>
> Any idea what is the problem?
Length(reply) == 0 means that the other side closed the socket without sending
anything back.
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t helped a bit these would have been done in a couple of hours.
How could anyone have known that this was the problem? AFIAK you didn't even
tell about the VPS. And moreover this wasn't a Python problem, so off topic
here.
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ge reference manual rather than reading in detail.) So, yes,
> they're O(n) operations. Thanks for hunting that down.
>
> ChrisA
It would be so much better to use the Flexible String Representation.
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',
'#9 /\n58#0#',
'10178#000#C S#S#124##001##DAY#Computer
Systems#Roper,\nPaul#3#MWF#11:00am#11:50am#1170 TMCB ',
'#41 /\n145#0#',
'10178#000#C S#S#124##002##DAY#Computer
Systems#Roper,\nPaul#3#MWF#2:00pm#2:50pm#1170 TMCB ',
'#40 /\n120#0#
Sibylle Koczian writes:
> Am 07.11.2013 14:14, schrieb Piet van Oostrum:
>> Nick the Gr33k writes:
>>
>>> I have decided to take your advice.
>>> I wasn't able to fit those 'lists' of mine into MySQL's varchar()
>>> datatype afte
use an extra table of downlaods that i asoociate with table
> visitors with a foreing key but decided to add an additional 'download'
> column into the existant visitors table:
Nikos, you are an excellent member of the Greek society. Listening to you makes
it so much easier to under
returns None. So the print
sequence_b(10) dosn't make sense.
If the print is only for debugging the use the following:
def sequence_b(N):
result = 0
for k in range (1,N):
step = ((-1)**(k+1))/(2*k-1)
print(step) ## debug output
result += step
return result
CONVERT FROM LISTS TO LONG STRINGS SO I CAN STORE SUCCESSFULLY LIST
> PYTHON DATATYPE TO MYSQL SCALAR STRING.
>
> EVERYHTIGN I TRIED FAILED.
Then why don't you use the simple solution: use a relational database to store
the data?
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ython should also include the Tcl/Tk header files.
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sking for
evidence you know you will never get.
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he condition every time through the for loop, even though there
> is no chance for needs_processing to change inside the loop, which does not
> look very efficient.
I bet in most cases you won't notice the time used to check the condition.
Beware of premature optimization!
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Piet van Oost
Piet van Oostrum writes:
> Νίκος Αλεξόπουλος writes:
>
>> There is no set of cookie returned back when visitor comes from a referer.
>>
>> Isn't this strange?
>> No matter if you visit a webpage as a direct hit or via a referer the
>> cookie on the v
my internet connection and then trying
both the back button and entering the URL in the address bar. So it has nothing
to do with referrer, I think.
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> functionality differ, Do you have experience with objective usage ?
> http://docs.python.org/2/library/functools.html#partial-objects
>
What do you mean with "objective usage"?
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mplete, it is not clear that
> you will be able to compile it at all. That's the difference between
> a calculator and a computer.
You think a language that is not Turing-complete cannot be compiled?
What nonsense is that. Please Mark, spare us your nonsense.
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Piet van Oostrum
Neil Cerutti writes:
>
> Context-sensitive grammars can be parse, too.
>
That's not English. Do you mean "parsed"?
But context-sentitive grammars cannot be specified by BNF.
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kens relate to each other.
Syntax is grammar. Tokens are part of the grammar (but often specified
separately with a different grammar, usually regular expressions, which is a
subset of BNF).
So are you just confused or are you trollong?
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could make it easy.
A language specification in BNF is just syntax. It doesn't say anything
about semantics. So how could this be used to produce executable C code
for a program? BNF is used to produce parsers. But a parser isn't
sufficient.
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Piet van Oostrum
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Ned Deily writes:
> In article ,
> Piet van Oostrum wrote:
>> I tried to install it from source, on Mac OS X 10.6.8, with Python
>> 3.3.2, and Tck/Tk 8.5 installed as Frameworks, but I get an error during
>> compilation. It seems it doesn't find the Tcl/TK f
with tcl.h from
Tcl 8.5
lipo: can't figure out the architecture type of:
/var/folders/5r/5r4ywY4e2ReN7U+8ZPQSJTI/-Tmp-//ccXN6p4b.out
error: command 'gcc-4.2' failed with exit status 1
You have new mail in /var/mail/piet
bash-3.2$ hg ftp -su
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t.show()
>
> I would like to place markers on the 4 curves when the price is equal to $20
> label it A, and when the price is equal to $40 and label it B. Does anyone
> know how I can accomplish this.
Something like:
plt.plot(20,40, 'bo')
plt.annotate('B', (20,40), xytex
ors that translated into pure C
code, which was then compiled with a C compiler. The resulting intermediate C
code would be an object-oriented program in C. IIRC, the C code was reasonably
clear, not really convoluted, so you would have been able to write it yourself.
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ll due respect, Mark, your remarks are rubbish. Nobody talked about
parsing input with binary switches except you. I answered that 40 years ago I
wrote a parser generator that generated a parser for Algol 68 (and another one
for Algol 60 I should have added). And all this was using punched cards.
IRC Lisp uses % for comments, but it may need to be doubled. (It's
> been doubled in the examples I've seen, and I don't remember the
> syntax.)
> Perhaps Scheme has the same convention, but Scheme could be considered a
> part of the Lisp clade.
Lisp and scheme use
socket.setdefaulttimeout(5)
>
> and it didn't make any difference.
>
> In both cases, Python version is "Python 2.7.3".
>
> Am I missing something ?
>
I would guess the difference to be caused by DNS. Maybe the DNS configuration
on the RPi is not optimal.
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cc, that I did not
know) and used it to generate a parser for Algol 68.
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Skip Montanaro writes:
> I don't have the time or inclination to continue supporting lockfile (
> https://pypi.python.org/
> pypi/lockfile/). If you'd like to take it over, let me know.
>
> Skip
Hi Skip,
I am interested.
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