ZADANIE 2

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
import re

counter = 0

with open('B02.csv') as f:
    lineNumber = sum(1 for _ in f)

with open('B02.csv') as f:
    for line in f:
	line = line.rstrip('\n')
        regLine = re.search("^(.)+;(-)*(\d)+;(-)*(\d)+;", line)
	if (regLine):
		counter = counter + 1

if (lineNumber == counter):
	print "Csv file is valid"
else:
	print "Csv file is not valid"
-----------------------------------------------------------------------------------------------

ZADANIE 4

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
import re

file = open(sys.argv[1], 'r')
try:
	content = file.read();
	match = re.findall(r'[\w\.-]+@[\w\.-]+', content)
finally:
	file.close();

print match