How do I use a requirements.txt file in Python?

How do I use a requirements.txt file in Python?

A requirements.txt file is used to specify the dependencies for your Python project. You can create it by listing the packages you need.

How do I create a requirements.txt file?

You can create it manually by writing the package names and versions in a text file named 'requirements.txt'. Alternatively, you can use the command pip freeze > requirements.txt to generate it automatically.

How do I install the packages listed in requirements.txt?

You can install the packages by running the command pip install -r requirements.txt in your terminal.

Can I specify package versions in requirements.txt?

Yes, you can specify versions using operators like ==, >=, or <=. For example, numpy==1.21.0.