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We will discuss about one of the built in functions that does help in this session every object in Python

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contains a reference to a string and this string contains a concise summary of the object and how to

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use it and the python's built in function help can access this information and display the result.

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So let us use the help function.

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Say for example we want to see the documentation for the Lent function in e in so let's pass this as

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an argument to the help function and then execute this line.

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So here you see information regarding the lend function.

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So the lend function returns the number of items in our container next let us pass the data type string

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to the help function and then execute this line apart from the documentation that is specified here.

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You can also see the different methods that can be called on this data type.

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String say for example the method capitalize.

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So this is how you can call method on a string using the dot operator.

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Case fold center count.

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So these are the different method that can be called on a string if you do not pass any argument to

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the help function and then execute.

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Here you see some interaction about the help system and then we also have the help prompt wherein you

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can type the keywords or any topics that you want to search for.

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So let in the list and then execute so you're busy.

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The differing methods that can be used on the list object and if you want to quit from the health system

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you can type.

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Good and then hit enter.

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So we have exited out of the health system and return to the interpreter.

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Next we will talk about another feature known as the tab completion.

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Every python object has various attributes and methods associated with it.

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So let us define a string SD are 1 and this is the string that is assigned to SD R1.

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Now if I want to perform any modification to the string art I want to manipulate the string I can use

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different methods on the string and in order to see the list of methods that can be used on a string.

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You can use the tap completion so for that type in your string SD are one dot and then hit tab the tab

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button on your keyboard so after you heard the tab game you see the different methods that can be called

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on the string.

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So let us choose this method.

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Put on the string and then execute so the case of all the characters in the string have been changed.

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Let's see another example.

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So let's give the string is the odd one and then hit the tab key so browse through all of the different

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method that can be applied on the string.

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So let's choose this method is Alpha.

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Execute.

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And if all of the characters in the string are alphanumeric this is going to return true.

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This functionality can be used on lists and other Python objects.