Managing the contents of a .txt requirements file for a Python virtual environment

Question

So, I am creating a completely new Flask application from scratch. Like all good developers, my first step was to create a virtual environment.

The first thing I install in a virtual environment is Flask == 0.11.1.Flask installs the following dependencies:

• press == 6.6
• itsdangerous == 0.24
• jinja2 == 2.8
• MarkupSafe == 0.23
• Werkzeug == 11/11/11
• wheels == 0.24.0

Now I am creating requirements.txt so that each cloning repository has the same version of libraries. However, my dilemma is this:

• I mention each of the Flask dependencies in requirements.txt along with version numbers OR
• Flask requirements.txt , pip install requirements.txt, Flask , .

Answer 1

. . requirements.txt, . , , , - Werkzeug>=0.11 , Werkzeug.

, . , .

Answer 2

, virtualenv, .

• virtualenv ($source path_to_virtualenv/bin/active)

• . txt

  pip freeze > requirements.txt
  

• , , ,

  pip install -r requirements.txt
  

Answer 3

( )

pip freeze > requirements.txt

/, .

:

pip install -r requirements.txt