A Simple Guide to Python String Formatting for Python Beginners – Python String Tutorial

By | July 30, 2019
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Formatting a python string is basic operation in python, especailly when you want to print a string, we have two ways to format a string. In this tutorial, we will introduce this two methods to format a string.

format python string

Use “%” operator

Here is “%” operator list.

%s – String (or any object with a string representation)

%d – Integers

%f – Floating point numbers

%.<number of digits>f – Floating point numbers with a fixed amount of digits to the right of the dot.

%x/%X – Integers in hex representation (lowercase/uppercase)

So we can use these operator to format a python string.

Format a string

  1. name = 'tutorialexample.com'
  2. str_1 = 'my name is %s' % name
  3. print(str_1)
name = 'tutorialexample.com'
str_1 = 'my name is %s' % name
print(str_1)

Output is: my name is tutorialexample.com

Format an integer

  1. age = 12
  2. str_1 = 'my age is %d' % age
  3. print(str_1)
age = 12
str_1 = 'my age is %d' % age
print(str_1)

Output: my age is 12

Format a float

  1. score = 96.5
  2. str_1 = 'my score is %.1f' % score
  3. print(str_1)
score = 96.5
str_1 = 'my score is %.1f' % score
print(str_1)

Output: my score is 96.5

Use string format() function

Here is an example.

  1. name = 'tutorialexample.com'
  2. str_1 = 'my name is {}'.format(name)
  3. print(str_1)
  5. age = 12
  6. score = 96.5
  7. str_1 = 'my age is {} and score is {}'.format(age, score)
  8. print(str_1)
name = 'tutorialexample.com'
str_1 = 'my name is {}'.format(name)
print(str_1)

age = 12
score = 96.5
str_1 = 'my age is {} and score is {}'.format(age, score)
print(str_1)

The output is:

  1. my name is tutorialexample.com
  2. my age is 12 and score is 96.5
my name is tutorialexample.com
my age is 12 and score is 96.5

Notice: if you use format() function to format a string, you must nocie the variable order.

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