Here is how to access environment variable values in Python.

import os

path = os.environ["PATH"] 

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To access environment variable values in Python, you can use the os.environ dictionary, which contains a mapping of all the environment variables and their values. For example, if you wanted to access the value of the PATH environment variable, you could use the above code. That code would get the value of the PATH environment variable and store it in a variable called path. You can then use this variable in your code as needed.

It's also worth noting that you can use the os.environ.get() method to access environment variables in a more safe and convenient way. This method takes the name of the environment variable as its argument and returns the value of the variable, or None if the variable is not set. For example:

import os

path = os.environ.get("PATH")

This would get the value of the PATH environment variable and store it in a variable called path, but it would not raise an error if the PATH variable is not set. Instead, it would simply return None in that case. This can be useful if you need to check for the presence of an environment variable before using it in your code. 

Overall, the os.environ dictionary provides a simple and straightforward way to access environment variable values in Python.

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