Asked By – nitrl
pip list generate a more comprehensive list than
$ pip list feedparser (5.1.3) pip (1.4.1) setuptools (1.1.5) wsgiref (0.1.2)
$ pip freeze feedparser==5.1.3 wsgiref==0.1.2
Pip’s documentation states:
|freeze||Output installed packages in requirements format.|
|list||List installed packages.|
What is a “requirements format”?
Now we will see solution for issue: Pip freeze vs. pip list
One may generate a
$ pip freeze > requirements.txt
A user can use this
requirements.txt file to install all the dependencies. For instance:
$ pip install -r requirements.txt
The packages need to be in a specific format for
pip to understand, such as:
# requirements.txt feedparser==5.1.3 wsgiref==0.1.2 django==1.4.2 ...
That is the “requirements format”.
django==1.4.2 implies install
1.4.2 (even though the latest is 1.6.x).
If you do not specify
==1.4.2, the latest version available would be installed.
You can read more in “Virtualenv and pip Basics“,
and the official “Requirements File Format” documentation.
This question is answered By – karthikr
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