Question

Exercise 11.4. If you did Exercise 10.7, you already have a function named has_duplicates that takes a list as a parameter and returns True if there is any object that appears more than once in the list. Use a dictionary to write a faster, simpler version of has_duplicates. Solution: http:// thinkpython2.com/code/has, duplicates.py.

Python 3. Help please. Here is my current code. What can I do to fix it? I

list=[1,2,2,3,4,5]
d = {}
for item in list:
if item in d:
return True
d[item] = True
return False

Answer 1

def has_duplicate(list):
    d = {}
    for item in list:
        if item in d:
            return True
        d[item] = True
    return False


print(has_duplicate([1, 2, 2, 3, 4, 5]))
print(has_duplicate([1, 2, 3, 4, 5, 4]))
print(has_duplicate([1, 2, 3, 4, 5]))

True True False Process finished with exit code 0