Question

my code looks something like this:

for filename in files:
  with open(filename, 'rb') as csvfile:
    csvreader = csv.reader(csvfile, delimiter=';')
    values=list(csvreader)
  dosomething()

i have about 10 files i want to process and it works without a problem for the first file. but when python tries to start processing the second file it says

Traceback (most recent call last):
File "plot.py", line 20, in <module>
values=list(csvreader)
TypeError: 'list' object is not callable

has anybody an idea why this won’t work?

Answer 1

Somewhere you have used a (global, if the problem is showing up here) variable named list to hold an instance of a list. That is a bad idea. The name list is looked up every time it’s used, and that variable is found in preference to the actual list type, which is what you want (i.e. in order to construct a list from the csvreader results).