Python Print Function [And Its SECRET Separator & End Arguments]

Everybody knows the print function in Python. It prints a string to the shell–and makes the computation of a Python program explicit to the programmer. But only few coders understand its powerful arguments to format the output. What are they?

There are two little-used arguments of the print function in Python. The argument sep indicates the separator which is printed between the objects. The argument end defines what comes at the end of each line.

Consider the following example:

a = 'hello'
b = 'world'

print(a, b, sep=' Python ', end='!')

Try it yourself in our interactive code shell:

Click “Run” to execute the shell and see the output. What has changed?


The print function has several arguments you can use to format the output.

The argument sep indicates the separator which is printed between the objects. By default sep is empty space. In the puzzle we set it to be ‘ Python ‘.

The argument end defines what comes at the end of each line. By default end is a line break. In the puzzle we set it to '!'. This means that print would print everything in one single line because there is no line break.

When we call print() with the given arguments and objects a and b we get the output 'hello Python world!'.

Where to Go From Here?

Enough theory, let’s get some practice!

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