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How to get doc strings in Python?
Doc strings is the documentation string which is string literal, and it occurs in the class, module, function or method definition, and it is written as a first statement.
There are two types of a Doc strings:
- one-line Doc strings
- multi-line Doc strings
These are mainly used in DataScience /Machine Learning Programming.
one-line Doc strings
This type of Doc strings fit in one line. You can write them either using single quotes( ' ... ') or triple quotes ('''....''') .
Example 1
in the following program we are declaring a doc string with in a function, and printing its contents.
def square(x): '''Returns argument x is squared.''' return x**x print (square.__doc__) help(square)
Output
Returns argument x is squared. Help on function square in module __main__: square(x) Returns argument x is squared.
Multi-line Doc strings
The Multi-line Doc Strings is similar to One-line Doc Strings the only difference is, after the first line of the multi-line doc strings we leave a single blank line, followed by descriptive text before closing it.
Example 2
def function(arg1): """Explanation of the function Parameters: arg1 (int): Description of arg1 Returns: int:Returning value """ return arg1 print(function.__doc__)
Output
As you can observe that the sentence "Explanation of the function" is separated from other contents of the comment by a single blank line.
Explanation of the function Parameters: arg1 (int): Description of arg1 Returns: int:Returning value
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