Python

##### Convert Kilometers to Miles

# Global constant for conversion
KILOMETERS_TO_MILES = 0.6214
# main def
def main():
    # Get distance in kilometers
    Kilometer=float(input('enter a distance in kilometers: '))
    KILOMETERS_TO_MILES = 0.6214
    Miles = Kilometer * KILOMETERS_TO_MILES
    print(Miles, 'miles')

# Call the main function.
main()


##### Display First 5 lines of a file
def main():
    counter = 0
    file_name = input('Enter the name of the file: ')
    open_file = open(file_name, 'r')
    for _ in open_file:
        counter += 1
    open_file.close()
    open_file = open(file_name, 'r')
    if counter < 5:
        for idx in open_file:
            idx = idx[:-1]
            print(idx)
    else:
        first_five = (open_file.readlines())[:5]
        for j in first_five:
            j = j[:-1]
            print(j)
        open_file.close()

main()