I want to read an entire file into a python list any one knows how to?
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1What tutorial are you using to learn Python?Greg Hewgill– Greg Hewgill2011-07-16 21:43:21 +00:00Commented Jul 16, 2011 at 21:43
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3Have you read any of the Python documentation?Chris Lutz– Chris Lutz2011-07-16 21:44:09 +00:00Commented Jul 16, 2011 at 21:44
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6 Answers
Simpler:
with open(path) as f:
myList = list(f)
If you don't want linebreaks, you can do list(f.read().splitlines())
Comments
print "\nReading the entire file into a list."
text_file = open("read_it.txt", "r")
lines = text_file.readlines()
print lines
print len(lines)
for line in lines:
print line
text_file.close()
1 Comment
Artsiom Rudzenka
Actually there is no need to iterate twice here - first using readlines and second using for loop
Max's answer will work, but you'll be left with the endline character (\n) at the end of each line.
Unless that's desirable behavior, use the following paradigm:
with open(filepath) as f:
lines = f.read().splitlines()
for line in lines:
print line # Won't have '\n' at the end
Comments
Or:
allRows = [] # in case you need to store it
with open(filename, 'r') as f:
for row in f:
# do something with row
# And / Or
allRows.append(row)
Note that you don't need to care here about closing file, and also there is no need to use readlines here.
Comments
Note that Python3's pathlib allows you to safely read the entire file in one line without writing the with open(...) statement, using the read_text method - it will open the file, read the contents and close the file for you:
lines = Path(path_to_file).read_text().splitlines()
Comments
Another way, slightly different:
with open(filename) as f:
lines = f.readlines()
for line in lines:
print(line.rstrip())
