Error in the method "count" for tuple

[fff]

I just wrote this simple code to count the number of 1 in this tuple. Ironically, it returns 2 instead of 1. I have the last version of Python. Also, I checked the program with Colab, and I got the same wrong result. It is interesting that this problem occurs only for "1"!!

mixed_tuple = (1, 3.4, "ali", True, [0, 3, 3])
print(mixed_tuple.count(1))

The result will be 2.