Is there way to resolve pymysql import using PyMySQL-1.0.3-py3-none-any.whl without pip install

[Monica Shiralkar]

I have having

import pymysql

in a python class. At the same path in the project I pasted PyMySQL-1.0.3-py3-none-any.whl downloaded from https://pypi.org/project/pymysql/#files.

However, it still gives "No module named 'pymysql' ".

I know one way to resolve it. If I do pip install pymysql at the same same path as the above python file, this import gets resolved.

Is pip install required or it can be resolved using the wheel file (PyMySQL-1.0.3-py3-none-any.whl) itself. If so what is the way?
Thanks

[Tim Holloway]

No, pip install isn't required, but it's one of the easier ways to install a python package. If I'm remembering correctly, if you unzip a whl, there's a "setup.py" that you can run.

Alternatively, if you're running a heavily packaged OS like Linux, a lot of the popular python packages can also be installed via the OS package installer (apt or yum/dnf). That has the advantage of registering them in the OS package database for auditing purposes and of course also for stuff like package repair and intrusion detection.

[Monica Shiralkar]

Thanks. Now this is what I am trying to understand. Like in java if some import gives error saying cannot resolve, we check that which dependency will resolve it and add that in maven and the import gets resolved, or we download that jar and put that in the lib folder and then the import gets resolved. What is the right way in python? Is it to do the pip install into the folder where the python file having this import is or is it to download the wheel file, extract it and run the setup.py into the folder where this python file is ? .

[Tim Holloway]

Ideally your project will include dependencies in the wheel manifest file, in which case pip will automatically install them similar to Maven.

Python is not Java, however. Maven downloads dependencies into a user's local cache and copies are made of the dependent JAR when building assemblies. Python, on the other hand doesn't cache. Instead it references the actual downloaded and unpacked dependency from its PYTHONPATH.

Python/pip also has the option to install into the system global python resources directory (requires root privileges) or to the user's local python resources, or, I believe, to a virtual python environment, although I've never really explored that one.

[Monica Shiralkar]

Tim Holloway wrote:Ideally your project will include dependencies in the wheel manifest file, in which case pip will automatically install them similar to Maven.

Thanks. "Pip will automatically install' means? What do we have to do from our end related to pip?

[Tim Holloway]

If you run pip on a package with dependencies, pip will download and install the package and its dependencies.

[Monica Shiralkar]

Thanks. Found the command.

pip install PyMySQL-1.0.3-py3-none-any.whl