python main

1def main():
2    print("Hello World!")
3
4if __name__ == "__main__":
5    main()

1if __name__ == "__main__":

1# Defining main function 
2def main(): 
3    print("hello World") 
4  
5  
6# Using the special variable  
7# __name__ 
8if __name__=="__main__": 
9    main() 

1
2print("Hello")
3
4print("__name__ value: ", __name__)
5
6
7def main():
8    print("python main function")
9
10
11if __name__ == '__main__':
12    main()
13

1if __name__ == "__main__":
2    # execute only if run as a script
3    main()
4

1 1from time import sleep
2 2
3 3print("This is my file to demonstrate best practices.")
4 4
5 5def process_data(data):
6 6    print("Beginning data processing...")
7 7    modified_data = data + " that has been modified"
8 8    sleep(3)
9 9    print("Data processing finished.")
1010    return modified_data
1111
1212def read_data_from_web():
1313    print("Reading data from the Web")
1414    data = "Data from the web"
1515    return data
1616
1717def write_data_to_database(data):
1818    print("Writing data to a database")
1919    print(data)
2020
2121def main():
2222    data = read_data_from_web()
2323    modified_data = process_data(data)
2424    write_data_to_database(modified_data)
2525
2626if __name__ == "__main__":
2727    main()
28