I have installed Python 3.8 in my machine (windows 10). I can see it is installed in following locations, and my Python programs are running fine, after adding these locations in PATH variable.
C:\Users\<user name>\AppData\Roaming\Python\Python38
C:\Users\<user name>\AppData\Local\Programs\Python\Python38
My questions:
Why is it installed in a local directory as well as a roaming directory?
In which directory I can find the source code of the functions like list append(), list insert(). I have tried looking for them in the site-package directory, but it has a huge number of sub-directories, and unable to figure out where exactly to find it.
To answer two of your questions:
you can find the source code in:
C:\Users<User>\AppData\Local\Programs\Python\Python39-32\Lib>
you can run 'where' in WINDOWS terminal to find out which Python version installed. Also run these Python snippet to confirm:
>>> import os
>>> import sys
>>> os.path.dirname(sys.executable)
'C:\\Users\\<User>\\AppData\\Local\\Programs\\Python\\Python39-32'
Related
I am using Python38.
I am trying to create a script to create/modify google sheets. So I came across several articles detailing how to accomplish this: article1, article2, article3.
Essentially it boils down to using two python packages: GSPREAD and OAUTH2CLIENT.
The problem is trying to import either of these returns the Module Not Found Error.
Running this:
import sys
print(sys.path)
I see the site-packages directory is returned in the list.
I have many other packages installed in the same directory that do work (e.g. bs4, Django, Flask, matplotlib, etc, etc), so why are these two packages not being found? Does the PATH variable need to be updated?
Thanks in advance!!
So I failed to mention in the question that I was trying to do the pip install from the command line (cmd on windows). Which successfully installed the packages, but did not allow visibility to the rest of the python environments.
The way to get this to work was to run the pip install command from the Anaconda Prompt (Anaconda's command line).
I have installed the latest version of IBM SPSS Statistics(Version 26) which has pre installed python 3.4 and 2.7. i am trying to use version 3.4 python. i am able to import modules like pip , sys , os etc. i tried pandas the same way. i am unable to do so. getting error no module found. Hence going through our forum and IBM support did the following changes.
received the following error
1) tried pointing the site-packages via
import sys
# Assuming windows and standard python folder here.
sys.path.append(r"D:\Python34\Lib\site-packages")
2) changed the path in the settings of SPSS
3) Tried installing pip in the below folder as suggested in the forum but got message i have already installed the updated version.
C:\Program Files\IBM\SPSS\Statistics\Subscription\Python3
4) following versions of python were installed
have tried what i could. Need your expertise help to fix the same which will help me to install/use modules needed for SPSS. Thanks.
This is going to be painful to explain, I'll do my best.
As far as I can tell, you're on windows. Usually when we need a new package, we just open cmd and type pip install xxx (assume you added python to path when installing it). The reason that this works, is because when you type pip install xxx in cmd, windows recognize pip to be a command because python path is in system variables. Windows know that I can execute pip install with this python path.
However for SPSS python (3.4), that python had a different path in the system. Thus when you only have the 3.7 or 3.8 python in path, windows cannot install package to you 3.4 python, and I'm not sure if you can have more than one python path in system.
In order to fix this, you need to first figure out what's the path to your 3.4 python, then in this page you can follow the instruction to remove your 3.7 or 3.8 python in path, and add your 3.4 path, then you can do pip install xxxx for whatever package you want
I did the same thing with a arcgis python distribution, hope this works for you. If the attached page does not work, just google add python path to windows and look for a instruction that works on you PC
Oh and the reason that you can import pip, sys and some other package but not pandas, is because python is 'battery included', it comes with tons of packages pre-installed for additional functionality, but pandas is not one of them.
Fixed it since my ananconda had version 3.7 .i created virtual environment and installed 2.7 python with anaconda package. Pointed SPSS to the 2.7 folder and was able to import pandas.
I generally like to make my python programs in a text editor and then run them after they are complete instead of line arguments. Thus, I save those .py files on a convenient folder location instead of Python program files.
I then run my .py file using Command Prompt. However it has not worked for the Biopython library as import Bio gives back a Traceback No module named 'Bio'. However, using line arguments directly on python shows it is installed.
I have never had this issue with Python in general and other downloaded libraries (import numpy for example works fine). How do I make the files available to be open from any location?? Or how do I provide the path in import?
To clarify and add:
1) I use Python from Windows 10
2) I downloaded and installed Python(3.7) from python.com
3) I downloaded Biopython using pip (and all other libraries I downloaded)
4) I also tried it on Jupyter notebook and also does not work to import Bio, whereas Import numpy does.
Thanks!
I am working on widows10 with python3.7
I have downloaded opencv and numpy and sklearn(scikit-learn) and they are in C:\Python37\Lib\site-packages (where pip put them) and when I run
import sys
print(sys.path)
I get the output:
['', 'C:\\Python35\\Lib', 'C:\\Python35\\DLLs', 'C:\\Python35\\Lib\\site-packages', 'C:\\Users\\E6440', 'C:\\Python37\\python37.zip', 'C:\\Python37\\DLLs', 'C:\\Python37\\lib', 'C:\\Python37', 'C:\\Python37\\lib\\site-packages']
on cmd it says C:\Python37\Lib\site-packages which is one of the paths it looks in for when importing but then as soon as I run some code it gives a no module named ___ error
this is similar to the question python cant find module in sys.path but the comments in that one did not help me
edit
solved by using PYTHONPATH that was accurate to the python version
The package you're trying to import the module from may be available in the Python 3.5 installation too, but the package for Python 3.5 may be missing the module you're trying to import. Try moving the Python 3.7 paths ahead of the Python 3.5 paths in your PYTHONPATH environment variable.
hello I'm new to python3 and python3.6, I usually use pip3 install to add old libraries to my python3 path.
I recently picked up python3.6 for managing my home servers with its asyncio functionalities however my python3.6 interpreter is unable to locate pwnlibs and am thus unable to reuse my old code.
I tried:
import sys
import os
sys.path.append(os.path.abspath(pwn.__file__))
import pwn
debugging results:
on python3.4 os.path.abspath(pwn.__file__) returns the correct path to the library
While sys.path.append is a valid means to add to your python path at runtime, you can't get the path from a module you have not yet loaded.
Instead you should install your packages using pip3 or in a specific location and add that to your path either at runtime or via the PYTHONPATH environment variable.
I would guess since you mentioned pip3 already however that you had the pwn package already installed when you tried with 3.4 and your install of Python 3.6 is not using the same paths as your Python 3.4 install. Try comparing your python paths from 3.4 with 3.6 by comparing the output from sys.path.
Lastly, just as a note, if you are using the pwntools package, it doesn't yet support Python 3, so if you are simply copying the folder, be aware it might not function correctly or at all.