Python print() function
The print() function in Python displays the given values as output on the screen. It can print one or multiple objects and allows customizing separators, endings, output streams and buffer behavior. It is one of the most commonly used functions for producing readable output.
Example 1: This example prints a list, tuple, and string together using the default separator and ending.
lst = [1, 2, 3]
t = ("A", "B")
s = "Python"
print(lst, t, s)
Output
[1, 2, 3] ('A', 'B') Python
Explanation: The function prints all objects in one line separated by the default space because sep=" ".
Syntax
print(object(s), sep, end, file, flush)
Parameters:
- object(s): One or more values to print. All are converted to strings before printing.
- sep (optional): String placed between objects. Default is " ".
- end (optional): String added at the end of output. Default is "\n".
- file (optional): Output destination (default: sys.stdout).
- flush (optional): If True, forces immediate output. Default is False.
Example 2: This example prints multiple objects but uses a custom separator to control spacing.
lst = [1, 2, 3]
t = ("A", "B")
s = "Python"
print(lst, t, s, sep=" | ")
Output
[1, 2, 3] | ('A', 'B') | Python
Explanation: The separator " | " replaces the default space, so print() inserts " | " between each object.
Example 3: This example shows how to print output without moving to the next line by changing the end character.
lst = [1, 2, 3]
t = ("A", "B")
s = "Python"
print(lst, t, s, end=" --> END")
Output
[1, 2, 3] ('A', 'B') Python --> ENDExplanation: The text " --> END" is printed at the end instead of the default newline because of end=" --> END".
Example 4: This example reads a file and prints its entire content using print().
To read and print this content we will use the below code:
f = open("geeksforgeeks.txt", "r")
print(f.read())
Output
Geeksforgeeks is best for DSA.
Example 5: This example prints output to the error stream instead of the default output stream.
import sys
company = "GFG"
loc = "Noida"
mail = "contact@gfg.org"
print(company, loc, mail, file=sys.stderr)
Output
GFG Noida contact@gfg.org
Explanation: Using file=sys.stderr redirects the printed text to the error output stream instead of the standard output.
