gistfile1.txt

"""
The function gets a string and deletes the letters that appear in sequence. That is, 
the function returns a string containing only one character from each sequence of identical characters in the input string.




>>> sequence_del("ppyyyyythhhhhooonnnnn")
'python'
>>> sequence_del("SSSSsssshhhh")
'Ssh'
>>> sequence_del("Heeyyy   yyouuuu!!!")
'Hey you!'

"""


# function removing extra letters from your sentence 
def sequence_del(my_str):
    result = "" # casting the result to string
    for letter in my_str: # running the letters
        if not (letter in result) or (letter != result[-1]): # conditions checking if the letter in the sentence or not
            result += letter # if the condition true you transfer all the letters to here 
    return result




def main():	
    <your code here>

if __name__ == "__main__":
    main()