Three methods of Python generation

In a Python project,Files are usually used to list all Python packages and their versions required by a project. This way, other people or systems can easily install all necessary dependencies to ensure the project is running correctly.

The following is generatedSeveral methods of file:

Method 1: Use pip freeze

If all the necessary packages are already installed in your project environment, you can usepip freezeCommand to generate a list of all installed packages and their versions. This list can be used directly asdocument.

Open the command line.
Activate Python project environment (such as venv or conda environment).
Run the following command:

pip freeze >

This will output all installed Python packages and their version information in the current environment toin the file.

Method 2: Create manually

If you know all the packages and their versions required for the project, you can also create one manuallydocument. Simply create a new file using a text editor and name it. Then, list each package and its version in the file, in the format as follows:

package1==1.0.0  
package2>=1.1,<2.0  
package3

Note that you can specify the specific version number (such as==1.0.0), or you can specify the version range (such as>=1.1,<2.0), or do not specify the version (write only the package name).

Method 3: Use pipreqs

pipreqsis a used for generationThird-party library of files. It will scan your project directory, automatically identify the libraries imported in the project, and generate a containing these librariesdocument.

Installpipreqs：

pip install pipreqs

Run the following command in the project root directory:

pipreqs ./ --force

This will generate a project root directory.File containing all Python packages and their versions used in the project. Notice,--forceParameters indicate the coverage of existingdocument.

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