Read a data from text file (Notepad)

[wavic]

This is because the iterator ( 'f' is exhausted ). During the reading from a file ( the for loop ) store the line in a list or a dictionary or a set ) so you can use it later. Or you can use f.readlines() method which will create a list and iterate over the list instead of 'f'.

data = f.readlines()
for line in data:
    # ...