How to loop through specific range of rows with Python csv reader?

Question

How to loop through a specific range of rows with Python csv reader?

The following code loops through all rows:

with open(trainFile, \'rt\') as csvfi         


        

Answer 1

Another itertools implementation using dropwhile and takewhile

from itertools import takewhile, dropwhile
trainFile = 'x.1'
low_lim = 3
high_lim = 6
with open(trainFile, 'rt') as csvfile:
    spamreader = csv.reader(csvfile, delimiter=' ', quotechar='|')
    g = (x for x in enumerate(spamreader, 1))
    g = dropwhile(lambda x: x[0] < low_lim, g)
    g = takewhile(lambda x: x[0] <= high_lim, g)
    for row in g:
        print (', '.join(row[1]))