RightToLeft.py

''' One of the robots is charged with a simple task: 
to join a sequence of strings into one sentence to produce instructions on how to get around the ship. 
But this robot is left-handed and has a tendency to joke around and confuse its right-handed friends.

You are given a sequence of strings. 
You should join these strings into a chunk of text where the initial strings are separated by commas. 
As a joke on the right handed robots, you should replace all cases of the words "right" with the word "left", 
even if it's a part of another word. All strings are given in lowercase.

Input: A sequence of strings.

Output: The text as a comma-separated string.

Precondition:
0 < len(phrases) < 42 '''


#def left_join(phrases: tuple) -> str:

phrases = ("left", "right", "left", "stop")
temp = "" 

for element in phrases:
    temp = temp+ element.replace("right","left")
    temp = temp + ","
    print(temp)

temp=temp.rstrip(",")

print(temp)

print(phrases)

#return temp