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Python String Formatting - simmanchith
We can format the results using the format() method to ensure that a string is presented as expected.
You can format chosen elements of a string using the format() method.
Sometimes you do not control sections of a text, perhaps it comes from a database or user input?
Add placeholders (curly brackets {}) in the text, and execute values via the format() method for controlling such values:
Example 1 :- Indicate the price by adding a placeholder :
price = 49 txt = "The price is {} dollars" print(txt.format(price))
Within the curly brackets, you can add specifications for how the value can be converted.
Example 2 :- The pricing format to be shown as a two decimal number :
The price is 49.00 dollars
In our string format() references, check all formatting types.
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If you wish to use more values, simply add more values to the method of format() :
Example :- Add more placeholders :
quantity = 3 itemno = 567 price = 49 myorder = "I want {} pieces of item number {} for {:.2f} dollars." print(myorder.format(quantity, itemno, price))
I want 3 pieces of item number 567 for 49.00 dollars.
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Example 1 :- You can use index numbers (a number inside the curly brackets {0}) to be sure the values are placed in the correct placeholders :
quantity = 3 itemno = 567 price = 49 myorder = "I want {0} pieces of item number {1} for {2:.2f} dollars." print(myorder.format(quantity, itemno, price))
I want 3 pieces of item number 567 for 49.00 dollars.
Example 2 :- Also, use an index number if you would like to refer to the same data more than once :
age = 36 name = "John" txt = "His name is {1}. {1} is {0} years old." print(txt.format(age, name))
His name is John. John is 36 years old.
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Example :- In the curly bracket {carname}, the named indexes can be used too, however when you supply the values of parameter txt.format(carname="Ford") you must use names :
myorder = "I have a {carname}, it is a {model}." print(myorder.format(carname = "Ford", model = "Mustang"))
I have a Ford, it is a Mustang.
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