Sometimes, we want to read specific lines from a file by line number with Python.
In this article, we’ll look at how to read specific lines from a file by line number with Python.
How to read specific lines from a file by line number with Python?
To read specific lines from a file by line number with Python, we can use the open and enumerate functions.
For instance, if we have the following text file:
foo.txt:
foo
bar
baz
Then we can read the 3rd line of the file by writing:
with open("foo.txt") as fp:
for i, line in enumerate(fp):
if i == 2:
print(line)
We call open with the path to the text file.
Then we loop through each line with the index i and line returned by enumerate.
We check if i is 2 to check if it’s reading the 3rd line.
If that’s True, then we call print to print the line.
So we see ‘baz’ printed.
Conclusion
To read specific lines from a file by line number with Python, we can use the open and enumerate functions.
