"Undefined variable : main" in pydev/python

Question

I made a file named "Main" in pydev and inside it wrote:

if  __name__ =='__Main__':
    main()

def main():
    print("jargon")    

It says my call to main() under the if statement contains an undefined variable and won't compile. Why does it do this?

Answer 1

Python code is executed top-to-bottom. You need to move your main() definition above the if __name__ == '__main__' block. The way you have it, at the time that you try to call main(), the function does not yet exist.