The 5th lesson of Python tutorial strings

This is the 5thr lesson of Python tutorial, in this lesson we deal with sequences, the second category of data types in Python.
Link : http://bit.do/eKx5k

Basically, there are 5 kinds of sequences strings, lists, tuples, sets and ranges . On the other hand, there is another division of sequences, mutable and immutable.

Here, we would discuss strings. About the others we would later.

A sequence is an object consisted of an ordered and an indexed group of item.

A string ( str for short) is any character enclosed between a pair of single or double quotation marks. Strings are sequences.

For example 'Python' and "Python" are strings. Unlike Java and C++ , in Python there is no type called char ( a char is a string has only one character).

Making a string:

To make one, you can simply use a pair of single or double quotation marks, or use the built-in function str(), in fact str() function is used to convert integers and floating point numbers to a string.

Examples.

'' an empty string ( has no character)

" " holds the whitespace character (space button from keyboard).

str("python") returns "python".
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