1. Introduction

Author: Rezwan

Python Variables and Data Types.py

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+# variable assignment
+x = 7
+y = 2.3
+z = 'hello'
+print(x, y, z) # 7 2.3 hello
+
+print(type(x)) # <class 'int'>
+print(type(y)) # <class 'float'>
+print(type(z)) # <class 'str'>
+
+
+# multiple assignment
+x, y, z = 1, 2.3, 'hello'
+print(x, y, z) # 1 2.3 hello
+
+# python number
+a = 5
+print(a, "is of type", type(a))
+
+a = 2.0
+print(a, "is of type", type(a))
+
+a = 2e22
+print(a, "is of type", type(a)) # 2e+22 is of type <class 'float'>
+
+a = 1+2j
+print(a, "is complex number?", isinstance(1+2j, complex)) # (1+2j) is complex number? True
+
+a = complex(2, 3)
+print(a) # (2+3j)
+
+a = True
+print(a) # True
+print(int(a)) # 1
+
+a = False
+print(a) # False
+print(int(a)) # 0
+
+###  Built-in Atomic Data Types
+print(2 + 3 * 4) # 14
+print((2 + 3) * 4)  # 20
+print(2**3) # 8 ( ** works as exponential )
+print(6/2) # 3.0 ( type float )
+print(6//2) # 3 (type int)
+print(6%2) # 0
+print(7%3) # 1
+print(2**100) # 1267650600228229401496703205376 (python can store big integer by default)
+
+a = 2
+b = 3
+print(a+b) # 5
+
+a = "Hello"
+b = "World"
+print(a + b)# HelloWorld
+print(5*a) # HelloHelloHelloHelloHello
+
+
+print(5==10) # False
+print(10 > 5) # True
+print((5 >= 1) and (5 <= 10)) # True
+