How to use pipreqs to create requirements.txt file

Question

I am trying to use the pipreqs package to generate a requirements.txt file. Following the documentation's examples I have been unable to make it work.

It seems simple enough, the documentation tells me to use this command in the terminal:

$ pipreqs /home/project/location

In my case, this is the location of my project:

$ pipreqs /Users/ep9k/Desktop/UVA\ Big\Deal

And I get this error message:

FileNotFoundError: [Errno 2] No such file or directory: '/Users/ep9k/Desktop/UVA BigDeal/requirements.txt'

The error message is correct, there is no requirements.txt file in that directory. I am trying to use pipreqs to create the requirements.txt file.

Reading the documentation, pipreqs is supposed to scan a python file for import statements and build the requirements.txt document based on that. So I tried this as well, with the file I want pipreqs to scan:

$ pipreqs /Users/ep9k/Desktop/UVA\ Big\Deal/1FigrFunctions.py

and I received this error, which is pretty much the same as above:

FileNotFoundError: [Errno 2] No such file or directory: '/Users/ep9k/Desktop/UVA BigDeal/1FigrFunctions.py/requirements.txt'

I am sure the solution is obvious. What am I doing wrong?

Answer 1

I discovered how to solve this error using below steps- If you want to specify full path for your python file, use this -

pipreqs --encoding utf-8 "C:\Users\username\Downloads\Bl_container\training\fold\"

Also, the python file should be alone in the folder.

If you are currently in your python file directory, use this -

pipreqs --encoding utf-8 "./"

Using encoding to get rid of the map error. Make sure that you are not connected to any VPN or you may get HTTPConnection error.

Answer 2

I answered my own question. I think the errors were due to there being a bunch of files in the directory I was trying to run pipreqs on. To solve this problem, I created a new empty directory called "test" and put the file I wanted to generate requirements.txt for in that directory. So there is only one file in my new "test" directory. Then I ran the command as follows:

$ pipreqs /Users/ep9k/Desktop/test

and it worked. Really simple...