CSV reader objects i.e. DictReader instances and objects returned
by the reader() function are iterable. next() function can be used
skip any number of lines.
import csv
with open(filename) as f:
reader = csv.DictReader(f, delimiter=';')
header = reader.fieldnames
a_line_after_header = next(reader)
another_line_after_header = next(reader)
# iterate over remaining lines
for row in reader:
...