| The Print Function | ||
|---|---|---|
 | Chapter 4. Simple Numeric Expressions and Output |  |
| The Print Function | ||
|---|---|---|
| | Chapter 4. Simple Numeric Expressions and Output | |
If you have Python 2.6, you can start using with the
print function. The print function is not part of
Python 2.6, it's a future expansion. To ease the transition from older to
newer language features, there is a __future__
module available. You can get this future expansion by using the following
statement at the beginning of your script or working session in
IDLE.
from __future__ import print_function
This will alert Python that you want to use the
print function instead of the
print statement. We'll look at the
import statement in depth in Part IV, “Components, Modules and Packages”.
The print function has the following formal definition.
print
(object,..., [,sep, ][,end, ][,file])
→ numberConvert the objects to strings and write the strings to the given file.
If sep is not specified, it is a single
space. If end is not specified, it is a
single \n. If the file is
not specified it is sys.stdout.
Examples:
from __future__ import print_function
import sys
print("335/113=",335.0/113.0)
print("Hi, Mom", "Isn't it lovely?", end='')
print('I said, "Hi".', 42, 91056)
print("Red Alert!", file-sys.stderr)
The print statement uses a trailing , to suppress
the newline that defines the end of a line of output. To do this with the
print function, use end=''.
To send output to standard error, use
file=sys.stderr.
| |  | |
| Expression Exercises |  | Expression Style Notes |