VARIABLES

what are variables?

• Variables are nothing but a name given to a data.
• It is also a reference to the data location in memory (RAM).
• I would even say, it is a pointer to that memory location.
• variables are executed in order of Top --> Bottom.

Types of Variables

1. Strings
2. Numbers
3. Decimal
4. Boolean
5. List

Rules for Variables Names

• it can only have alphabet, alphabet+number and special character like underscore.
• should be meaningful.
• ex:
  • lowercase alphabet => a-z
  • uppercase alphabet => A-Z
  • number => 0-9
  • underscore => _

Example

• a1 = 10 ✅
• cust_name = ‘James’ ✅
• cust-name = ‘James’ ❌
• cust name - ‘James’ ❌

String

• title = “John smith”

Numbers

**Different Print statements **

print(f"variable")

used for variables places inside curly brackets {variable}

>>> title = "John Smith"
>>> print(f"{title}")
John Smith

print(“string”)

>>> print("john smith")
john smith
>>>