The "format()" function is a built-in function in Python that is used to format strings. It allows you to combine strings and values in a flexible and dynamic way, making it a powerful tool for building complex and dynamic text.
The "format()" function takes one or more arguments, which can be strings, numbers, or other objects. It replaces placeholders in a string with the values of the arguments, according to a specified format. The placeholders are indicated by curly braces {} in the string, and are replaced by the values of the arguments in order.
Here's an example of how to use the "format()" function in Python:
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name = "John"
age = 42
message = "My name is {} and I am {} years old.".format(name, age)
print(message)
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In this example, we define two variables "name" and "age" with the values "John" and 42, respectively. We then define a string "message" containing a placeholder for the name and age values. We call the "format()" function on the "message" string with the "name" and "age" variables as arguments. The function replaces the placeholders in the string with the values of the arguments, and assigns the resulting string to the "message" variable. We then print the value of "message", which is "My name is John and I am 42 years old.".
The "format()" function can also be used to format numbers with a specified number of decimal places. Here's an example:
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pi = 3.14159265359
message = "The value of pi is {:.2f}".format(pi)
print(message)
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