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Course Overview
Python help() Function
Python help() function is used to get help related to the object passed during the call. It takes an optional parameter and returns help information. If no argument is given, it shows the Python help console. It internally calls python’s help function.
Signature
- help(object)
Parameters
object: It can be any object for which we wan to get help.
Return
It returns the object’s info.
Let’s see some examples of help() function to understand it’s functionality.
Python help() Function Example 1
-
# Python help() function example
# Calling function
info = help() # No argument
# Displaying result
print(info)
Output:
- Welcome to Python 3.5’s help utility!
Python help() Function Example 2
-
# Python help() function example
# Calling function
info = help(1) # integer value
# Displaying result
print(info)
Output:
-
Help on int object:
class int(object)
| int(x=0) -> integer
| int(x, base=10) -> integer
|
| Methods defined here:
|
| __abs__(self, /)
| abs(self)
|
| __add__(self, value, /)
| Return self+value.
|
| __and__(self, value, /)
| Return self&value.
Python help() Function Example 3
If the object is a list, it opens the list module, and it?s class. See the output.
-
# Python help() function example
# Calling function
info = help(list) # integer value
# Displaying result
print(info)
Output:
-
Help on class list in module builtins:
class list(object)
| list() -> new empty list
| list(iterable) -> new list initialized from iterable’s items
|
| Methods defined here:
|
| __add__(self, value, /)
| Return self+value.
|
| __contains__(self, key, /)
| Return key in self.
|
| __delitem__(self, key, /)
| Delete self[key].
Python help() Function Example 4
If no help or info is present, it shows a message to the console and returns None.
-
# Python help() function example
# Calling function
info = help(“Javatpoint”) # integer value
# Displaying result
print(info)
Output:
-
No Python documentation found for ‘Javatpoint’.
Use help() to get the interactive help utility.
Use help(str) for help on the str class.None
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