How count() function works?

Question

Given:

st = "banana"
print(st.count("ana"))
# => 1

How come the count is 1, it should be 2 right? please explain to me.

Answer 1

As per documentation of str.count():

Return the number of non-overlapping occurrences of substring sub ...

In your case, the occurrences of "ana" are overlapping.