I am a python newbie.
I want to read a text file which reads something like this
1345..
245..
..456
and store it in a list of lists of integers. I want to keep the numbers and replaces the periods by 0s.How do i do it?
EDIT: Apologize for the ambiguous output spec
p.s I want the output to be a list of list
[ [1,3,4,5,0,0],
[2,4,5,0,0],
[0,0,4,5,6]]
with open('yourfile') as f:
lst = [ map(int,x.replace('.','0')) for x in f ]
Which is the same thing as the following nested list-comp:
lst = [ [int(val) for val in line.replace('.','0')] for line in f]
Here I used str.replace to change the '.' to '0' before converting to an integer.
[ [int(x.replace('.','0'))] for x in f ]
with open(file) as f:
lis=[[int(y) for y in x.replace('.','0').strip()] for x in f]
Here's an answer in the form of classic for loops, which is easier for a newbie to understand:
a_list = []
l = []
with open('a') as f:
for line in f:
for c in line.rstrip('\n').replace('.', '0'):
l.append(int(c))
a_list.append(l)
#next line
l = []
print a_list
[0, 0, 4, 5, 6]for the last one...