I have to install the python package in the following way,
pip install --no-binary=protobuf protobuf
But How to write requirements.txt
with --no-binary=protobuf
?
No, there is no need to specify a version. It's probably a good idea to specify one, though. If you want to specify a version but you don't know which version to specify, try using pip freeze , which will dump out a list of all the packages you currently have installed and what their versions are.
Typically the requirements. txt file is located in the root directory of your project. Notice we have a line for each package, then a version number. This is important because as you start developing your python applications, you will develop the application with specific versions of the packages in mind.
Turning my comment into an answer:
pip
supports reading options from requirement files. This means that a requirements file
protobuf
--no-binary=protobuf
is a valid requirements line, same as e.g. a file consisting out of a single line
protobuf --no-binary=protobuf
This means that you can also reference other requirement files, e.g.
# requirements.txt
-r test_requirements.txt
spam eggs
Note, however, that pip install -r requirements.txt
is roughly equivalent to running cat requirements.txt | xargs pip
, so the options are applied to the whole command and not a single line or file. For example, this file defines conflicting options:
# requirements.txt
spam --no-binary=eggs
bacon --only-binary=eggs
An attempt of installing from this requirements file will lead to an error.
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