I have two python script
emotion.py
if __name__ == '__main__':
user=raw_input("Enter your name\n")
print("Calling open smile functions.....")
subprocess.Popen("correlationSvg.py", shell=True)
correlationSvg.py
from emotion import user
import os
import csv
with open('csv/test/'+user+'.csv') as f:
reader = csv.DictReader(f, delimiter=';')
rows = list(reader)
i am getting error
ImportError: cannot import name user
why is it so ?
The variable user is defined inside the if __name__ == '__main__' block. This one is not executed when the import statement is executed.
You can of course define a (script-) global variable
user = ""
if __name__ == '__main__':
user=raw_input("Enter your name\n")
print("Calling open smile functions.....")
subprocess.Popen("correlationSvg.py", shell=True)
If you would like to get the user while execution, I would either put the line
user=raw_input("Enter your name\n")
into correlation.py or:
in sympathy.py:
def get_user():
user=raw_input("Enter your name\n")
and access this function from correlation.py. Just remember: the import statement happens at the time you call the interpreter, while user assignment happpens at runtime.
if doesn't have its own scope in Python.
Because you are using if __name__ == '__main__'. If file is being imported from another module, __name__ will be set to the module's name. Which means, codes in that indentation will only be processed if you run emotion.py.
For detailed explanation about __name__, you might wanna look here.
You could try this, to force user to be global:
user = ''
if __name__ == '__main__':
user=raw_input("Enter your name\n")
However... you should really think about what you are doing here. If you don't expect to set user unless this is the main module - what are you expecting to happen when you import it from another module?
Probably, you should be passing this as a parameter to a function, not trying to import it.
__name__ will only be __main__ if this is the entry module, i.e. c:\python26\python.exe emotion.py. that's not what you want. when you import a module, all its code is executed immediately (though usually, that 'code' just declares a function). If you want the user prompt to be done all the time, don't hide it behind a name check, just include it. You could also make it a function that does the user entry and returns the string; you would then just call the function.