[Python] How do you I add a module into my PYTHONPATH?

I am attempting to download a code from github which contains the library "ee" - Google Earth Engine. GitBash is giving me an error:

ModuleNotFoundError: No module named 'fcntl'


fcntl is a module within the library Google Earth Engine. I have Windows and it seems Linux is required. I was directed to add the module (fcntl) to the PYTHONPATH. Any other suggestions for this error would be helpful as well! The code I intend to add in PYTHONPATH is below.

def fcntl(fd, op, arg=0):
return 0

def ioctl(fd, op, arg=0, mutable_flag=True):
if mutable_flag:
return 0
else:
return ""

def flock(fd, op):
return

def lockf(fd, operation, length=0, start=0, whence=0):
return

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