TypeError: unhashable type: 'list'
I am experimnenting with this (reproducer) code:
pattern_eur= ['Total amount']
mylines = []# Declare an empty list.
with open ('tmp0.txt', 'rt') as myfile: # Open tmp.txt for reading text.
for myline in myfile: # For each line in the file,
mylines.append(myline.rstrip('\n')) # strip newline and add to list.
for element in mylines: # For each element in the list,
match_C = re.search(pattern_eur, element)
if match_C:
element = element + 2
print(element)
--
the input file being:
$ cat tmp0.txt
line 0
line 1
Total amount
5.00
linex
line z
line c
Total amount
43598
line
line m
Total amount
32000
line end -1
line end 0
line end 1
line end 2
--
My intent is to locate the line containing "Total amount", skip the next
line, then print the eur value. The program terminates as follows:
Traceback (most recent call last):
File "search_then_advance.py", line 8, in
match_C = re.search(pattern_eur, element)
File
"c:\Users\joepareti\Miniconda3\pkgs\python-3.7.1-h8c8aaf0_6\lib\re.py",
line 183, in search
return _compile(pattern, flags).search(string)
File
"c:\Users\joepareti\Miniconda3\pkgs\python-3.7.1-h8c8aaf0_6\lib\re.py",
line 276, in _compile
return _cache[type(pattern), pattern, flags]
TypeError: unhashable type: 'list'
Thanks for any insigths --
--
Regards,
Joseph Pareti - Artificial Intelligence consultant
Joseph Pareti's AI Consulting Services
https://www.joepareti54-ai.com/
cell +49 1520 1600 209
cell +39 339 797 0644
--
https://mail.python.org/mailman/listinfo/python-list
Re: TypeError: unhashable type: 'list'
On Wed, Oct 23, 2019 at 3:54 AM joseph pareti wrote:
>
> I am experimnenting with this (reproducer) code:
> pattern_eur= ['Total amount']
the above line can't contain a list -- just a string
see help(re.search)
> mylines = []# Declare an empty list.
> with open ('tmp0.txt', 'rt') as myfile: # Open tmp.txt for reading text.
> for myline in myfile: # For each line in the file,
> mylines.append(myline.rstrip('\n')) # strip newline and add to list.
> for element in mylines: # For each element in the list,
>match_C = re.search(pattern_eur, element)
>if match_C:
> element = element + 2
> print(element)
> --
> the input file being:
> $ cat tmp0.txt
> line 0
> line 1
> Total amount
>
> 5.00
> linex
> line z
> line c
> Total amount
>
> 43598
> line
> line m
>
> Total amount
>
> 32000
> line end -1
> line end 0
> line end 1
> line end 2
>
> --
>
> My intent is to locate the line containing "Total amount", skip the next
> line, then print the eur value. The program terminates as follows:
> Traceback (most recent call last):
> File "search_then_advance.py", line 8, in
> match_C = re.search(pattern_eur, element)
> File
> "c:\Users\joepareti\Miniconda3\pkgs\python-3.7.1-h8c8aaf0_6\lib\re.py",
> line 183, in search
> return _compile(pattern, flags).search(string)
> File
> "c:\Users\joepareti\Miniconda3\pkgs\python-3.7.1-h8c8aaf0_6\lib\re.py",
> line 276, in _compile
> return _cache[type(pattern), pattern, flags]
> TypeError: unhashable type: 'list'
>
> Thanks for any insigths --
> --
> Regards,
> Joseph Pareti - Artificial Intelligence consultant
> Joseph Pareti's AI Consulting Services
> https://www.joepareti54-ai.com/
> cell +49 1520 1600 209
> cell +39 339 797 0644
> --
> https://mail.python.org/mailman/listinfo/python-list
--
Joel Goldstick
http://joelgoldstick.com/blog
http://cc-baseballstats.info/stats/birthdays
--
https://mail.python.org/mailman/listinfo/python-list
Re: TypeError: unhashable type: 'list'
joseph pareti wrote:
> I am experimnenting with this (reproducer) code:
> pattern_eur= ['Total amount']
Make that
pattern_eur = 'Total amount'
>match_C = re.search(pattern_eur, element)
The first argument to re.search() should be a string, not a list of strings:
>>> import re
>>> re.search("foo", "bar")
>>> re.search(["foo"], "bar")
Traceback (most recent call last):
File "", line 1, in
File "/usr/lib/python3.4/re.py", line 170, in search
return _compile(pattern, flags).search(string)
File "/usr/lib/python3.4/re.py", line 282, in _compile
p, loc = _cache[type(pattern), pattern, flags]
TypeError: unhashable type: 'list'
> element = element + 2
This will be your next problem; you are adding 2 to a string.
--
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Re: TypeError: unhashable type: 'list'
On 23/10/19 8:51 PM, joseph pareti wrote:
I am experimnenting with this (reproducer) code:
pattern_eur= ['Total amount']
mylines = []# Declare an empty list.
with open ('tmp0.txt', 'rt') as myfile: # Open tmp.txt for reading text.
for myline in myfile: # For each line in the file,
mylines.append(myline.rstrip('\n')) # strip newline and add to list.
for element in mylines: # For each element in the list,
match_C = re.search(pattern_eur, element)
if match_C:
element = element + 2
print(element)
--
the input file being:
$ cat tmp0.txt
line 0
line 1
Total amount
5.00
linex
...
My intent is to locate the line containing "Total amount", skip the next
line, then print the eur value. The program terminates as follows:
...
Thanks for any insigths --
The first observation is that the two for loops are essentially
identical, so why not condense?
However, what is described may be calling for a solution called "a
finite state machine":
state 1: ignore unwanted data, until "Total amount" is found
state 2: skip blank line
state 3: grab the Euro value, and return to state 1
Being a simple-boy, I would avoid any reg-ex, because:
myline[ :11 ] == "Total amount"
is easier (and faster). Similarly, there is no need for rstrip-ping
except at "state 3" (unless there are particular rules for the
formatting of the total).
Another thought is that the problem is being visualised as a series of
lines and this may complicate things. If instead, a "buffer" or indeed
the entire file, could be read at a time (which is current code, per
first comment above), the string.find() method could be employed
(replacing "state 1"), and then (implicit assumption about spacing here)
"state 2" becomes a matter of moving a few characters 'along', before
grabbing the total; rinse and repeat...
Web-ref:
https://en.wikipedia.org/wiki/Finite-state_machine
--
Regards =dn
--
https://mail.python.org/mailman/listinfo/python-list
Re: TypeError: unhashable type: 'list'
On 23/10/19 8:51 PM, joseph pareti wrote:
I am experimnenting with this (reproducer) code:
pattern_eur= ['Total amount']
mylines = []# Declare an empty list.
with open ('tmp0.txt', 'rt') as myfile: # Open tmp.txt for reading text.
for myline in myfile: # For each line in the file,
mylines.append(myline.rstrip('\n')) # strip newline and add to list.
for element in mylines: # For each element in the list,
match_C = re.search(pattern_eur, element)
if match_C:
element = element + 2
print(element)
--
the input file being:
$ cat tmp0.txt
line 0
line 1
Total amount
5.00
linex
...
My intent is to locate the line containing "Total amount", skip the next
line, then print the eur value. The program terminates as follows:
...
Thanks for any insigths --
The first observation is that the two for loops are essentially
identical, so why not condense?
However, what is described may be calling for a solution called "a
finite state machine":
state 1: ignore unwanted data, until "Total amount" is found
state 2: skip blank line
state 3: grab the Euro value, and return to state 1
Being a simple-boy, I would avoid any reg-ex, because:
myline[ :11 ] == "Total amount"
is easier (and faster). Similarly, there is no need for rstrip-ping
except at "state 3" (unless there are particular rules for the
formatting of the total).
Another thought is that the problem is being visualised as a series of
lines and this may complicate things. If instead, a "buffer" or indeed
the entire file, could be read at a time (which is current code, per
first comment above), the string.find() method could be employed
(replacing "state 1"), and then (implicit assumption about spacing here)
"state 2" becomes a matter of moving a few characters 'along', before
grabbing the total; rinse and repeat...
Web-ref:
https://en.wikipedia.org/wiki/Finite-state_machine
--
Regards =dn
--
https://mail.python.org/mailman/listinfo/python-list
Unpickle patch: cannot instantiate 'WindowsPath' on your system
Hello, I hope that I am writing to the right list. Python 3.7.4 on GNU/Linux Parabola 5.3.1-gnu-1 x86_64 AMD Issue: I got a .pickle which had some WindowsPath inside. I was unable to unpickle like this: ┌ │ import pickle as pkl │ from pathlib import Path, PureWindowsPath, PurePath, PurePosixPath, WindowsPath, PosixPath │ fname = "ohw_analysis.pickle" │ # fpath = PureWindowsPath(fname) │ fpath = Path(fname) │ with open(fpath, "rb") as fd: │ # Works in Winbug$ only │ ohw_analysis = pkl.load(fd) └ I tried to create my own class to override =_new= in =Path=, but that did not work, because (I assume that) the pickle data was pointing to =pathlib=. I did not know how to solve this, so I modified the code for pathlib.py Solution: The modification allowed me to unpickle the file, and I think that it would not break =pathlib=. I have seen this issue reported elsewhere, and I thought that it could be useful to others. Extra: I really hope that this is useful. Although I am not asking for help, if there was a better solution, let me know. I don't want a Github account (Micro$oft). Thanks! -- https://mail.python.org/mailman/listinfo/python-list
Re: Black
On 22/10/19 3:18 AM, lizhollinshe...@gmail.com wrote: What do people think about black? I'm asking because one of my personal preferences is to use spaces for clarity: 1. right = mystr[ start : ] black version right=mystr[start:] 2. mtime = time.asctime( time.localtime( info.st_mtime ) ) black version mtime = time.asctime(time.localtime(info.st_mtime)) Is there a reason why PEP8 doesn't like these spaces? FYI: Python Bytes pod-cast "Episode #153: Auto format my Python please!" https://pythonbytes.fm/episodes/show/153/auto-format-my-python-please (topic nr6) NB I have not listened to it. [via PlanetPython] Apparently informed by blog article: "written on 06/02/2018 Auto formatters for Python 👨💻🤖" https://www.kevinpeters.net/auto-formatters-for-python -- Regards =dn -- https://mail.python.org/mailman/listinfo/python-list
Fursday Flippancy: American Py
[via PlanetPython] The "American Py" song. Lyrics which amused me, at https://www.reddit.com/r/Python/comments/dfm2zv/american_py/ 'Multi-taskers' may like to read and listen-along to: https://www.youtube.com/watch?v=uAsV5-Hv-7U For the benefit of us silver-surfers reliving our youth (or for those condemned to repeat history): https://en.wikipedia.org/wiki/American_Pie_%28song%29 -- Regards, =dn -- https://mail.python.org/mailman/listinfo/python-list
installation problem
Dear Python team I have installed Python 3.7.4 on windows 10. I have access to IDLE and I can run simple programs, but when I type python in command window nothing happens. I wanna install pip and afterward some libraries and it is when the problem occurs. why doesn't prompt window recognize python. What shall I do? Best regards -- https://mail.python.org/mailman/listinfo/python-list
Re: installation problem
On 2019-10-24 00:47, fateme jbr wrote: Dear Python team I have installed Python 3.7.4 on windows 10. I have access to IDLE and I can run simple programs, but when I type python in command window nothing happens. I wanna install pip and afterward some libraries and it is when the problem occurs. why doesn't prompt window recognize python. What shall I do? what do you mean by "nothing happens"? It should either start Python or show an error. Python 3.7 comes with pip; it should be installed already. The recommended way of starting Python on Windows these days is to use the Python launcher "py". You can use it run to pip: py -m pip install library_name -- https://mail.python.org/mailman/listinfo/python-list
