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"""

# Variable names are case-sensitive

"""

print("__________________________Assign Value______________________________________________________")

x = 1 # x is an integer

print(type(x))

x = 'hello' # now x is a string

print(type(x))

x = [1, 2, 3] # now x is a list

print(type(x))

x = {1: 'one', 2: 'two'} # now x is a dict

print(type(x))

x = True

# False The false value of the bool type

# True The true value of the bool type

print(type(x))

x = None

# None The sole value of the type NoneType

print(type(x))

print("__________________________Assign Value to Multiple Variables_________________________________")

x, y, z = "Orange", 10.5, True

print(x)

print(y)

print(z)

print("__________________________Literals___________________________________________________________")

# Numeric Literals

a = 0b1010 # Binary Literals

b = 100 # Decimal Literal

c = 0o310 # Octal Literal

d = 0x12c # Hexadecimal Literal

# Float Literal

float_1 = 10.5

float_2 = 1.5e2

print(a, b, c, d)

print(float_1, float_2)

# String literals

strings = "This is Python"

char = "C"

multiline_str = """This is a multiline string

with more than

one line code."""

unicode = u"\u00dcnic\u00f6de"

raw_str = r"raw \n string"

print(strings)

print(char)

print(multiline_str)

print(unicode)

print(raw_str)

# Boolean literals

x = (1 == True)

y = (0 == False)

a = True + 4

b = False + 10

print("x:", x)

print("y:", y)

print("a:", a)

print("b:", b)

print("__________________________Constants__________________________________________________________")

import intro.constant as constant

print(constant.PI)

print(constant.GRAVITY)

print("__________________________How bool() works?__________________________________________________")

test = []

print(test, 'is', bool(test))

test = [0]

print(test, 'is', bool(test))

test = 0.0

print(test, 'is', bool(test))

test = None

print(test, 'is', bool(test))

test = True

print(test, 'is', bool(test))

test = 'Easy string'

print(test, 'is', bool(test))

a += 2 # a = a + 2

a -= 2 # a = a - 2

a *= 2 # a = a * 2

a /= 2 # a = a / 2

print("__________________________LEGB Rule: Local, Enclosing, Global, Built-in_______________________")

# This programs shows the rules for variable scope

x = 'Global x'

def test():

# global x

y = 'Local y'

x = 'Local x'

print(x + ', ' + y) # prints 'Local x' and 'Local y'

if __name__ == '__main__':

test()

print(x) # prints 'Global x'