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+--- Thread: python library not defined in user defined function (/thread-27221.html)
python library not defined in user defined function - johnEmScott - May-30-2020
Why doesn't this work?
def main():
import os
fileName = "text.txt"
userfunction(fileName)
def userfunction(fileName):
os.path.exists(fileName)
main()I get the following error:Error:NameError: name 'os' is not definedRE: python library not defined in user defined function - ndc85430 - May-30-2020
Because the import is local to your
main function. Imports should go at the top of the file, as per PEP 8.
RE: python library not defined in user defined function - DT2000 - May-30-2020
As mentioned above by ndc85430 you need to import your modules before the actual code functions are executed.
import os
def main():
fileName = "text.txt"
userfunction(fileName)
def userfunction(fileName):
os.path.exists(fileName)
main()