Python Classroom notes 19/Feb/2026

Program

• Is set of instructions and all necessary values will be stored in memory.
• To specify the size of memory to be allocated, languages use data types.
• Depending on data type, your memory size might be
  • static
  • dynamic
• depending on type (Static/dynamic) when we change value same memory can be used in static and new memory is required in dynamic.
• static data types lead to mutable memory and dynamic data types lead to immutable memory

References

• Real python
• Programiz

REPL in python

• REPL stands for Read Evaluate Print and Loop
• To launch repl open terminal and type python
  

Data types

• Refer Here for programiz
• Prompt

you are an expert in python.
I'm a beginner learning python.
Explain me what datatypes are, different datatypes in python.
When to use what with examples one after another

• Languages can be categorized as two types

  • statically typed programming languages (c, C++, java, C#)
  • dynamically typed programming languages (python, javascript)

• Common datatypes

  • numbers:
    • integers
    • float
    • vectors
  • text
    • string
  • boolean

• Variable: A variable refers to a memory location with an alias

age = 24
# allocate memory for 24 and i would be referring that with age

name = 'ram'
# allocate memory for 'ram' and i would refer that as name