Best Practices

Coding standards

link - peps.python.org/pep-0008/ 

if a_string != "": 
    ... 
# Simplifies to 
if a_string: 
    ... 

if a_number != 0: 
    ... 
# Simplifies to 
if a_number: 
    ... 

def check_senior(age: int) -> bool: 
    # This `if` statement is unnecessary! 
    if age > 60: 
        return True 
    else: 
        return False 
# Exactly equivalent to 
def check_senior(age: int) -> bool: 
    return age > 60 

def check_toddler(age: int): 
    # The `== True` part is redundant! 
    return (age >= 5) == True 
def check_toddler(age: int): 
    # Much better! 
    return age >= 5 

# Defining a function to reverse a string 
def reverse_a_string(): 
    # Reading input from console 
    a_string = input("Enter a string") 
    new_strings = [] 
    
    # Storing length of input string 
    index = len(a_string)    # Reversing the string using while loop 
    while index: 
         index -= 1 
         new_strings.append(a_string[index]) 
    
    #Printing the reversed string 
    print(''.join(new_strings))  
reverse_a_string()