python - Row count in a csv file -

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i making stupid mistake, can't find is. want count number of lines in csv file. wrote this, , isn't working: have row_count = 0 while should 400. cheers.

f = open(adresse,"r") reader = csv.reader(f,delimiter = ",") data = [l l in reader] row_count = sum(1 row in reader)  print row_count 

with open(adresse,"r") f:     reader = csv.reader(f,delimiter = ",")     data = list(reader)     row_count = len(data)

you trying read file twice, when file pointer has reached end of file after saving data list.


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