How to prevent python from going to new line in for loop?

How to prevent python from going to new line in for loop? - Printable Version

+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: General Coding Help (https://python-forum.io/forum-8.html)
+--- Thread: How to prevent python from going to new line in for loop? (/thread-23750.html)

How to prevent python from going to new line in for loop? - idknuttin - Jan-15-2020

For example, let's say I want to go through each character in a string and print it like this

for x in "Python":
    print(x)

This prints

P
y
t
h
o
n

How do I make it print this instead?

Python

My second question is when I print two variables how do I avoid printing the white space in between them? for example when I type this:

x = 5
y = 6
print(x, y)

it prints this

5 6

but I want it to print it like this with no white space in between the 5 and 6
56

RE: How to prevent python from going to new line in for loop? - prateekshaw - Jan-15-2020

Hi,

Check this

https://docs.python.org/3/library/functions.html#print

for x in "Python":
   ...:     print(x,end='')

print(x,y,sep='')

So basically every print automatically add \n to end that is reason why we see next line. But we can override this by setting end value.

RE: How to prevent python from going to new line in for loop? - jefsummers - Jan-15-2020

Don't forget Python's built in help system. For example:

>>> help(print)

Output:Help on built-in function print in module builtins:

print(...)
    print(value, ..., sep=' ', end='\n', file=sys.stdout, flush=False)
    
    Prints the values to a stream, or to sys.stdout by default.
    Optional keyword arguments:
    file:  a file-like object (stream); defaults to the current sys.stdout.
    sep:   string inserted between values, default a space.
    end:   string appended after the last value, default a newline.
    flush: whether to forcibly flush the stream.

Shows that print() is pretty handy - can use to write to files, create an easy csv file (print to file and use sep=", "), use a newline or not, etc.

RE: How to prevent python from going to new line in for loop? - deanhystad - Feb-11-2022

You can format what is printed. I like this as it gives me total control.

x, y = 5, 6
print(f"My numbers are ({x},{y})")

Output:
My numbers are (5,6)

As for printing multiple prints on one line, you can do that with stdout.write() and print(end=""), but I prefer not doing multiple prints.

This is a bit of code I extracted from a tic-tac-toe game. In uses str formatting and str joining to print out the tic-tac-toe board.

class Board():
    def __init__(self, board):
        self.board = list(board)

    def __str__(self):
        rows = [f" {self.board[i]} | {self.board[i+1]} | {self.board[i+2]}" for i in range(0, 9, 3)]
        return "\n---+---+---\n".join(rows)

winner = "O"
ttt = Board("OX  OXX O")
print(f" The winner is {winner}\n\n{ttt}")

Output:The winner is O

 O | X |
---+---+---
   | O | X
---+---+---
 X |   | O

By making the entire board a str it is easy to ask the where to place the next "X".

pos = input(f"{board}\n {player}: ")