Add lecture 2 outline

Author: Sahil

README.md

@@ -12,4 +12,4 @@ To discuss any doubts or questions after today's class with the community, join
 
 # Lectures
 - Lecture 1: [[Notes]](/lecture1.md) [[Video]](https://www.youtube.com/watch?v=OrzXiZKtudA) - Installing Python, REPL, using Python as a calculator, basic data types, input and output
-- Lecture 2: coming tomorrow.
+- Lecture 2: [[Notes]](/lecture2.md)

day2/recap.py

@@ -0,0 +1,37 @@
+# Quick Recap
+
+# variables
+lecture_day = 2
+print(lecture_day)
+
+# numbers can be int, float or complex
+square_area = 36
+circle_area = 6.28
+iota = (-1) ** (1/2)
+print(square_area, circle_area, iota)
+
+# basic mathematical operators
+print(square_area + circle_area)
+print(4 * square_area)
+print(iota/square_area)
+
+# type function
+print(type(iota))
+
+# strings
+greeting = "Hello from Scaler!"
+print(greeting)
+
+# f-strings
+msg = "Hello from"
+name = "Scaler"
+print(f"{msg} {name}!")
+
+# input from user
+num1 = int(input())
+num2 = int(input())
+print(num1 + num2)
+
+# none value
+x = None
+print(x)

lecture2.md

@@ -0,0 +1,29 @@
+# Day 2: Flow Control
+
+## Day 1 Recap
+[Basics of Python](day2/recap.py)
+
+## Operators
+- and
+- or
+- not
+- comparisons (<, >, ==, !=)
+
+## Conditionals
+- if
+- else
+- elif
+
+## Loops
+- for
+- while
+
+## Jump statements
+- break
+- continue
+
+## Functions
+- Defining functions
+- Calling functions
+- Function scope
+- Recursive functions