python main
def main():
print("Hello World!")
if __name__ == "__main__":
main()python main
def main():
print("Hello World!")
if __name__ == "__main__":
main()python if __main__
#Add this code to run a support module on its own.
#Great for running quick tests.
if __name__ == "__main__":
function_that_starts_the_module_to_run_on_its_own()
#or
test_function_included_in_module()how to define main in python
# Defining main function
def main():
print("hello World")
# Using the special variable
# __name__
if __name__=="__main__":
main()if __name__ == '__main__' in python
# if __name__ == '__main__' checks if a file is imported as a module or not.
# example:
def main():
print('Hello World')
if __name__ == '__main__':
# This code won't run if this file is imported.
main()python __main__
1from time import sleep
2
3print("This is my file to demonstrate best practices.")
4
5def process_data(data):
6 print("Beginning data processing...")
7 modified_data = data + " that has been modified"
8 sleep(3)
9 print("Data processing finished.")
10 return modified_data
11
12def read_data_from_web():
13 print("Reading data from the Web")
14 data = "Data from the web"
15 return data
16
17def write_data_to_database(data):
18 print("Writing data to a database")
19 print(data)
20
21def main():
22 data = read_data_from_web()
23 modified_data = process_data(data)
24 write_data_to_database(modified_data)
25
26if __name__ == "__main__":
27 main()Copyright © 2021 Codeinu
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