In [13]:

    

def remove_e(input_str):
    
    return_str = ""
    
    for character in input_str:
        if character is not "e":
            return_str = return_str + character
            
    return return_str


    

In [17]:

    

def remove_vowels(input_str):
    vowels = list("aeiouAEIOU")
    return_str = ""
    
    for character in input_str:
        if character not in vowels:
            return_str = return_str + character
            
    return return_str


    

In [18]:

    

remove_vowels("Hello, World!")


    

    
Out[18]:





'Hll, Wrld!'

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