String Class and Input Function in Python| How To Use Strings In Python | Python Tutorial PART 4

Опубликовано: 29 Ноябрь 2021
на канале: teCHemistry
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In this video we will see :
String Class in Python
Input Function in Python
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String Class
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Python Strings
Python has a built-in string class named "str" with many handy features (there is an older module named "string" which you should not use). String literals can be enclosed by either double or single quotes, although single quotes are more commonly used. Backslash escapes work the usual way within both single and double quoted literals -- e.g. \n \' \". A double quoted string literal can contain single quotes without any fuss (e.g. "I didn't do it") and likewise single quoted string can contain double quotes. A string literal can span multiple lines, but there must be a backslash \ at the end of each line to escape the newline. String literals inside triple quotes, """ or ''', can span multiple lines of text.

Python strings are "immutable" which means they cannot be changed after they are created (Java strings also use this immutable style). Since strings can't be changed, we construct new strings as we go to represent computed values. So for example the expression ('hello' + 'there') takes in the 2 strings 'hello' and 'there' and builds a new string 'hellothere'.

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Input Function in Python
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The input() function allows a user to insert a value into a program. input() returns a string value. You can convert the contents of an input using any data type. For instance, you can convert the value a user inserts to a floating-point number. input() is supported in Python 3.


String Class and Input Function in Python| How To Use Strings In Python | Python Tutorial PART 4
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