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Python - Format - Strings

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String Format

As we learned in the Python Variables chapter, we cannot combine strings and numbers like this:

Example

age = 36
txt = "My name is John, I am " + age
print(txt)
Try it Yourself »

But we can combine strings and numbers by using the format() method!

The format() method takes the passed arguments, formats them, and places them in the string where the placeholders {} are:

Example

Use the format() method to insert numbers into strings:

age = 36
txt = "My name is John, and I am {}"
print(txt.format(age))
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The format() method takes unlimited number of arguments, and is placed into the respective placeholders:

Example

quantity = 3
itemno = 567
price = 49.95
myorder = "I want {} pieces of item {} for {} dollars."
print(myorder.format(quantity, itemno, price))
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You can use index numbers {0} to be sure the arguments are placed in the correct placeholders:

Example

quantity = 3
itemno = 567
price = 49.95
myorder = "I want to pay {2} dollars for {0} pieces of item {1}."
print(myorder.format(quantity, itemno, price))
Try it Yourself »

Learn more about String Formatting in our String Formatting chapter.

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