python - how to print contents of PYTHONPATH -

i have set path using

sys.path.insert(1, mypath) 

then, tried print contents of pythonpath variable using os.environ below

print(os.environ['pythonpath']) 

but getting error as

    raise keyerror(key) keyerror: 'pythonpath' 

how can print contents of pythonpath variable.

instead of using os.environ dict, can simple use sys module:

import sys print(sys.path) 

this solution should platform independant. pythonpath key can vary depending on os.