Remove Duplicate from str

#INPUT: String
#Output: String

def removeDuplicates(string):
# Initializing set and list
# Set for storing unique characters
    mySet = set()
    list = []
# Iterating input string
    for ch in string:
        if ch not in mySet:
            mySet.add(ch)
            list.append(ch)
    
    return ''.join(list)        

string = "Hello ClearTrail Technologies"
print(removeDuplicates(string))

INFO