Add number.py to demonstrate various number operations and precision handling in Python

Wcoder547 · Wcoder547 · commit 920483f63587 · 2025-07-03T06:34:44.000+05:00
diff --git a/Numbers/number.py b/Numbers/number.py
@@ -0,0 +1,87 @@
+from decimal import Decimal, Context
+from fractions import Fraction
+import math
+import random
+
+# Decimal precision example
+ctx = Context(prec=6)
+result = ctx.add(Decimal('1.23456'), Decimal('7.89012'))
+print("Decimal context result:", result)  # 9.12468
+
+# Big integer power
+x = 2 ** 1000
+print("2 ** 1000 =", x)
+
+# Float division
+result = 1 / 3
+print("1 / 3 =", result)
+
+# str vs repr vs print
+print("str('chai'):", str('chai'))       # 'chai'
+print("repr('chai'):", repr('chai'))     # "'chai'"
+print("print('chai'):", end=" "); print('chai')  # chai
+
+# Boolean in conditionals
+print("bool([]):", bool([]))             # False
+print("bool(-1):", bool(-1))             # True
+print("bool({'name': 'Alice'}):", bool({'name': 'Alice'}))  # True
+
+# Comparison operators
+print("1 < 2:", 1 < 2)                   # True
+print("5.0 == 5.0:", 5.0 == 5.0)         # True
+print("4.0 != 5.0:", 4.0 != 5.0)         # True
+
+# math.floor() and math.trunc()
+print("math.floor(3.5):", math.floor(3.5))       # 3
+print("math.floor(-3.5):", math.floor(-3.5))     # -4
+print("math.trunc(-2.8):", math.trunc(-2.8))     # -2
+print("math.trunc(2.8):", math.trunc(2.8))       # 2
+
+# Large integer precision
+print("999999999999999999 + 1 =", 999999999999999999 + 1)  # Works fine
+
+# Complex numbers
+print("(2 + 1j) * 3 =", (2 + 1j) * 3)  # (6+3j)
+
+# Number bases
+print("0xFF =", 0xFF)                 # 255
+print("0b1000 =", 0b1000)             # 8
+print("oct(64) =", oct(64))           # '0o100'
+print("hex(64) =", hex(64))           # '0x40'
+print("bin(64) =", bin(64))           # '0b1000000'
+print("int('64', 16) =", int('64', 16))  # 100
+print("int('1000', 12) =", int('1000', 12))  # 1728
+
+# Random module
+print("random.random():", random.random())          # Random float 0–1
+print("random.randint(1, 100):", random.randint(1, 100))  # Random int
+
+li = ['lemon', 'masala', 'ginger tea']
+print("random.choice(li):", random.choice(li))      # Random element
+random.shuffle(li)
+print("shuffled li:", li)
+
+# Floating point precision issues
+print("0.1 + 0.1 + 0.4 =", 0.1 + 0.1 + 0.4)          # May be 0.6000000000000001
+print("0.1 + 0.1 + 0.1 =", 0.1 + 0.1 + 0.1)          # 0.3
+print("0.1 + 0.1 + 0.1 + 0.3 =", 0.1 + 0.1 + 0.1 + 0.3)  # 0.6
+print("(0.1 + 0.1 + 0.1) + 0.3 =", (0.1 + 0.1 + 0.1) + 0.3)  # 0.6
+
+# Solving precision issue with Decimal
+print("Decimal('0.1') * 3 =", Decimal('0.1') + Decimal('0.1') + Decimal('0.1'))  # 0.3
+
+# Fractions
+myFr = Fraction(2, 7)
+print("Fraction(2,7) =", myFr)  # 2/7
+
+# Set operations
+setone = {1, 2, 3, 4}
+print("setone & {1,3} =", setone & {1, 3})  # Intersection
+print("setone | {1,3,7} =", setone | {1, 3, 7})  # Union
+
+# Boolean types and comparisons
+print("type(True):", type(True))       # <class 'bool'>
+print("True == 1:", True == 1)         # True
+print("False == 0:", False == 0)       # True
+print("True is 1:", True is 1)         # False (because they’re not the same object)
+print("True + 4 =", True + 4)          # 5
