Python: How to loop through blocks of lines

Question

How to go through blocks of lines separated by an empty line? The file looks like the following:

ID: 1
Name: X
FamilyN: Y
Age: 20

ID: 2
Name: H
FamilyN: F
A         


        

Answer 1

If file is not huge you can read whole file with:

content = f.open(filename).read()

then you can split content to blocks using:

blocks = content.split('\n\n')

Now you can create function to parse block of text. I would use split('\n') to get lines from block and split(':') to get key and value, eventually with str.strip() or some help of regular expressions.

Without checking if block has required data code can look like:

f = open('data.txt', 'r')
content = f.read()
f.close()
for block in content.split('\n\n'):
    person = {}
    for l in block.split('\n'):
        k, v = l.split(': ')
        person[k] = v
    print('%s %s %s' % (person['FamilyN'], person['Name'], person['Age']))