Exercise 3.3
input = '....slsslslsls...sls'
index = 0
for i in range(len(input)):
if input[i] == '.':
index = i
print(input[:index])
INFO
input = '....slsslslsls...sls'
index = 0
for i in range(len(input)):
if input[i] == '.':
index = i
print(input[:index])