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I want to create a Python program which takes in multiple lines of user input. For example:
This is a multilined input.
It has multiple sentences.
Each sentence is on a newline.
How can I take in multiple lines of raw input?
Answer #1:
sentinel = '' # ends when this string is seen
for line in iter(raw_input, sentinel):
pass # do things here
To get every line as a string you can do:
'n'.join(iter(raw_input, sentinel))
Python 3:
'n'.join(iter(input, sentinel))
Answer #2:
Alternatively, you can try sys.stdin.read() that returns the whole input until EOF:
import sys
s = sys.stdin.read()
print(s)
Answer #3:
Keep reading lines until the user enters an empty line (or change stopword to something else)
text = ""
stopword = ""
while True:
line = raw_input()
if line.strip() == stopword:
break
text += "%sn" % line
print text
Answer #4:
Just extending this answer https://stackoverflow.com/a/11664652/4476612
instead of any stop word you can just check whether a line is there or not
content = []
while True:
line = raw_input()
if line:
content.append(line)
else:
break
you will get the lines in a list and then join with n to get in your format.
print 'n'.join(content)
Answer #5:
*I struggled with this question myself for such a long time, because I wanted to find a way to read multiple lines of user input without the user having to terminate it with Control D (or a stop word).
In the end i found a way in Python3, using the pyperclip module (which you’ll have to install using pip install)
Following is an example that takes a list of IPs
*
import pyperclip
lines = 0
while True:
lines = lines + 1 #counts iterations of the while loop.
text = pyperclip.paste()
linecount = text.count('n')+1 #counts lines in clipboard content.
if lines <= linecount: # aslong as the while loop hasn't iterated as many times as there are lines in the clipboard.
ipaddress = input()
print(ipaddress)
else:
break
For me this does exactly what I was looking for; take multiple lines of input, do the actions that are needed (here a simple print) and then break the loop when the last line was handled. Hope it can be equally helpful to you too.
Answer #6:
Try this
import sys
lines = sys.stdin.read().splitlines()
print(lines)
INPUT:
1
2
3
4
OUTPUT:
[‘1’, ‘2’, ‘3’, ‘4’]
Answer #7:
The easiest way to read multiple lines from a prompt/console when you know exact number of lines you want your python to read, is list comprehension.
lists = [ input() for i in range(2)]
The code above reads 2 lines. And save inputs in a list.
Answer #8:
sys.stdin.read() can be used to take multiline input from user. For example
>>> import sys
>>> data = sys.stdin.read()
line one
line two
line three
<<Ctrl+d>>
>>> for line in data.split(sep='n'):
print(line)
o/p:line one
line two
line three
