IsString.py

#Python program to get a new string from a given string where "Is" has been added to the front. If the given string already begins with "Is" then return the string unchanged
def new_string(str):
    if len(str)>=2 and str[:2]=='Is':
        return str
    return "Is"+str
print(new_string("Array"))
print(new_string("IsEmpty"))