zpifile.py error - no crc 32 attribute

[Thomas Jollans]

On 08/23/2018 12:43 AM, jacob m wrote:
> " import zlib
> print(zlib.__file__)"
>
> When I don't have the zlib uploaded to my Python3.7 library, I have the
> following error:
> "Traceback (most recent call last):
>    File "./testx.py", line 2, in <module>
>      import zlib
> ModuleNotFoundError: No module named 'zlib'"

zlib is part of the standard library. It should have been there when you 
installed Python.

> When I download the zlib 1.2.11 from http://www.zlib.net/, rename the
> "zlib-1.2.11" folder into "zlib" (after unpacking) and upload it into
> Python library, the result is:

Don't do that.

  * that's not a Python package. It has no business being in the Python 
path.
  * don't put things into the Python path willy-nilly. Let the canonical 
tools (i.e.: pip, setup.py files, etc.) take care of it.
  * DEFINITELY don't put your own stuff into the *standard* library 
location. Use site-packages/ for custom packages.

Install Python again from scratch. If you can't import zlib and zipfile 
in a *clean* Python install, come back and tell us how you installed 
Python and what OS/distribution you're using. Then I'm sure we can help 
you figure out what went wrong.

If you installed from source and you didn't have zlib headers installed 
at the time, I could imagine this happening... but I have no idea if 
Python would even build without zlib.

-- Thomas


> "# ./testx.py
> None
> "
> In the second case I still have the AttributeError with crc32.
>
>
>
> On 22 August 2018 at 23:09, Ashok Arora <ashok.maillist at gmail.com> wrote:
>
>> Test this in the interpreter:-
>>
>>      import zlib
>>      zlib.__file__
>>
>> It will return the location of zlib module.
>>
>> On 8/22/18, jacob m <kgrenczuk at gmail.com> wrote:
>>>   Hi,
>>> " Is there perhaps a different zlib on
>>> your path, hiding the real zlib?" - I'm unsure of that.
>>>
>>> "sudo apt-get install zlib1g-dev
>>> Reading package lists... Done
>>> Building dependency tree
>>> Reading state information... Done
>>> zlib1g-dev is already the newest version.
>>> 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded."
>>> Regards
>>>
>>>
>>> On 22 August 2018 at 13:12, jacob m <kgrenczuk at gmail.com> wrote:
>>>
>>>> Hi guys,
>>>> I have a problem with zipfile and zlib module, and hope to get some
>> help.
>>>> That's my error:
>>>> "    import zipfile
>>>>    File "/home/lib/python3.7/lib/python3.7/zipfile.py", line 19, in
>>>> <module>
>>>>      crc32 = zlib.crc32
>>>> AttributeError: module 'zlib' has no attribute 'crc32' "
>>>>
>>>> I have no idea what to do with that :/ I use this version of zipfile:
>>>> https://github.com/python/cpython/blob/3.7/Lib/zipfile.py
>>>>
>>>> Somebody knows how to solve it?
>>>> Regards
>>>>
>>>>
>>> --
>>> https://mail.python.org/mailman/listinfo/python-list
>>>