May 2018
Intermediate to advanced
380 pages
9h 37m
English
As mentioned previously, a requirements file, requirements.txt, can be created to provide a list of packages to install all at once, via pip install -r requirements.txt. The requirements file can specify specific or minimum versions, or simply specify the library name and the latest version will be installed.
It should be noted that files pulled from the requirements file aren't necessarily installed in a particular order. If you require certain packages to be installed prior to others, you will have to take measures to ensure that the installation is sequential, such as having multiple pip install calls.
Requirements files can specify version numbers of packages explicitly. For example, ...