Strings in Python: Differences from Integers and Other Variables

n Python, strings are sequences of characters enclosed in single (' '), double (" "), or triple quotes (''' ''' or """ """). They are used to represent text data. For example:

Key Characteristics of Strings:

1. Immutable: Once a string is created, it cannot be changed. Any operation that modifies a string creates a new string.

2. Sequence Type: Strings are sequences of characters, meaning you can access individual characters using indexing or slicing.

3. Text Representation: Strings are used to store and manipulate text data.

Differences Between Strings and Integers (or Other Variables):

1. Data Type:

   • Strings are of type str.

   • Integers are of type int.

   • Other variables can be of types like float, list, dict, etc.

2. Usage:

   • Strings are used for text data.

   • Integers are used for whole numbers.

   • Other variables (like float) are used for decimal numbers, list for sequences of items, etc.

3. Operations:

   • Strings support operations like concatenation (+), repetition (*), and slicing (my_string[0:5]).

   • Integers support arithmetic operations like addition (+), subtraction (-), multiplication (*), etc.

   • Mixing strings and integers directly in operations (e.g., "Hello" + 5) will raise a TypeError.

4. Representation:

   • Strings are enclosed in quotes.

   • Integers are written as plain numbers (e.g., 42).

Examples:

To combine strings and integers, you need to convert the integer to a string using str():

In summary, strings are for text, integers are for whole numbers, and each type has its own set of operations and behaviors.