Python: (IndexError: list index out of range) readFile

Question

I got this text in a text file file:

_2015.9.30 - 15:36:3 , 13_
_2015.9.30 - 15:36:6 , 24_
_2015.9.30 - 15:36:8 , 33_

and I want to have it like this

_data=['2015.9.30 - 15:36:3', '2015.9.30 - 15:36:6', '2015.9.30 -15:36:8']_
_values=['13', '24', '33']_

so I tried this code

def getData(path):
   data = []

   readFile = open(path,'r')
   sepFile = readFile.read().split('\n')
   readFile.close()

   for i in sepFile:
       myData = i.split(',')
       data.append(myData[0])

   return data



def getValues (path):
   values = []

   readFile = open(path,'r')
   sepFile = readFile.read().split('\n')
   readFile.close()

   for i in sepFile:
       myValues = i.split(',')
       values.append(myValues[1])

   return values

print getData("mytext.txt")
print getValues("mytext.txt")

the first method getData works fine but the second one dont want to work .. errormessage:

['2015.9.30 - 15:36:3 ', '2015.9.30 - 15:36:6 ', '2015.9.30 - 15:36:8'] 

Traceback (most recent call last):
File "C:\Python27\z.NEW\schrottplatz.py", line 34, in <module>
print getValues("mytext.txt")
File "C:\Python27\z.NEW\schrottplatz.py", line 29, in getValues
values.append(myValues[1])
IndexError: list index out of range

Check if you have a comma in every line in your file. Does it maybe contain empty lines, e.g. at the very end? The error occurs when the program tries to split a string containing no commas, resulting in a list with only one value, meaning that index 1 does not exist in it. — plamut
– plamut, Commented Sep 30, 2015 at 14:16

FunkySayu · Accepted Answer · 2015-09-30 14:18:41Z

1

If I understood well, _ are not parts of your file.

2015.9.30 - 15:36:3 , 13
2015.9.30 - 15:36:6 , 24
2015.9.30 - 15:36:8 , 33

Using generators, a solution would be like this :

with open(path) as f:
    data, values = zip(*(line[:-1].split(" , ") for line in f.readlines()))

If _ are part of your file, then the following will also work :

with open(path) as f:
    data, values = zip(*(line[1:-2].split(" , ") for line in f.readlines()))

answered Sep 30, 2015 at 14:18

FunkySayu

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Cody Bouche · Accepted Answer · 2015-09-30 14:18:34Z

0

file.txt

_2015.9.30 - 15:36:3 , 13_
_2015.9.30 - 15:36:6 , 24_
_2015.9.30 - 15:36:8 , 33_

code

with open('file.txt') as f:
    data = f.read().splitlines()

_data, _values = [], []
for d in data:
    val = d.split(' , ')
    _data.append(val[0][1:])
    _values.append(val[1][:-1])

print _data
print _values
#['2015.9.30 - 15:36:3', '2015.9.30 - 15:36:6', '2015.9.30 - 15:36:8']
#['13', '24', '33']

answered Sep 30, 2015 at 14:18

Cody Bouche

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