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5 months .Q:
How to add new line before every line of file in Python 3
I want to add line break before every line of the file. After the first line it should be
. Here is my code:
f = open("sample.csv")
for line in f:
for i in line:
print("
"+i)
But after the first line it adds only
. How can I get
?
A:
You could use this:
print("
" + "".join(["
"] + line.split("
")) + "
")
This uses the fact that every line of a file contains a line-break, and also the fact that a string is joined together with + if it only contains a single sequence of characters (except for single-quotes).
A:
You can use "
" as the string to write:
f = open("sample.csv")
for line in f:
print(line.strip(), end= "
")
Output:
1
2
3
4
5
In order to catch exceptions at the end of the file, it is advisable to add a try...finally block:
import sys
f = open("sample.csv")
def close_file(fn):
try:
f.close()
except Exception:
print(sys.exc_info()[0])
sys.exit(1)
for line in f:
print(line.strip(), end= "
")
close_file(f)
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