A. Introduction
While making decisions, we often need to compound multiple conditions. For instance, 1<x<10 requires x>1 AND x<10. How to say AND in Python? What about x>1 OR y<1?
B. Notes:
1. A boolean expression (or logical expression) evaluates to one of two states true or false. Python provides the boolean type that can be either set to False or True. Many functions and operations return boolean values.
The not keyword can also be used to inverse a boolean value.
>>> not True
False The evaluation using the and and or operators follow these rules:
and and or both evaluate expressions from left to right while and have higher precedence.
with and, if all values are True, returns the last evaluated value. If any value is False, returns the first False value, and ignores the rest. This is called short-circuit.
or returns the first True value, and ignores the rest(short-circuit). If all are False, returns the last False.
Summary:
x Returns True if x is True, False otherwise
x and y Returns x if x is False, y otherwise
x or y Returns y if x is False, x otherwise2. Examples
3. Operator Precedence: See the table below. Highest precedence at the top, lowest at the bottom. Operators in the same box evaluate left to right.
C. Try this:
1. Let the user enter three side lengths of a triangle as input, print out if it is an equilateral, Isosceles, or scalene triangle.
2. Let the user enter measurements of a triangle's three interior angles as input, print out if it is an acute, right, or obtuse triangle.
a = int(input("Please enter length of side A: ")) b = int(input("Please enter length of side B: ")) c = int(input("Please enter length of side C: ")) if a == b == c: print("Equilateral") elif a == b or a == c or b == c: print("Isoceles") else: print("Scalene") a = int(input("Please enter measure of angle A: ")) b = int(input("Please enter measure of angle B: ")) c = int(input("Please enter measure of angle C: ")) if (a == 90 or b == 90 or c == 90) and a+b+c == 180: print("Right") elif (a > 90 or b > 90 or c > 90) and a+b+c == 180: print("Obtuse") elif a+b+c == 180: print("Acute")
print("Instructions:") print("\nAll you have to do is put in the \ninterior angles of your triangle\nand I will tell you what type of triangle it is.\n\n") a=int(input()) b=int(input()) c=int(input()) abc = a+b+c if abc==180: print("\nThe triangle you entered is a real triangle.") if a<=0 or b<=0 or c<=0: print("One of your angles are equal to or less than zero.\nThat is illegal. You will be arrested for not knowing that.") elif a+b+c!=180: print("\nPlease check all your angles to make sure\nare correct.") if a==b==c and abc==180: print("\nThe triangle you entered is an equilateral triangle.") if a==b and b!=c and abc==180: print("\nThe triangle you entered is a isosceles \ntriangle.") if a==c and c!=b and abc==180: print("\nThe triangle you entered is a isosceles \ntriangle.") if c==b and b!=a and abc==180: print("\nThe triangle you entered is a isosceles \ntriangle.") if a!=b and a!=c and c!=b and abc==180: print("\nThe triangle you entered is a scalene \ntriangle.") if abc!=180: print("\nALERT: The triangle you entered is no\n a valid email address") print("\n\nThank you for using Triangle Calculator \nby LuphADoff Incorporated.") if abc-abc==0: print("\n\n\nFun Face: LuphADoff is the best \nplace to find get high quality apps and stuff.")
the one with the lengths
print('here is a bot that depends not on the angles, but on the side length wowie') print("the only real difference there is is angles a+b+c=180 and the sides a+b>c and a+c>b and b+c>a") a=int(input()) b=int(input()) c=int(input()) if a+b>c and a+c>b and b+c>a: print("real triangle yay") else: print("not a triangle that exists😞") if a==b!=c or a==c!=b or c==b!=a and a+b>c and a+c>b and b+c>a: print("isosceles triangle") if a!=b!=c and a+b>c and a+c>b and b+c>a: print("scalene triangle") if a==b==c and a+b>c and a+c>b and b+c>a: print("equilateral triangle") else: print(" ")
hello aaaaaaaaaaaaaaaaaaaaa
print("triangle machine go brrr") print("type angles for a triangle and I will decide if it is isosceles, equilateral, scalene, or doesn't exist") a=int(input()) b=int(input()) c=int(input()) if a+b+c==180: print("real triangle") elif a>178 or b>178 or c>178: print('that triangle doesn\'t exist you imbecile') elif a+b+c!=180: print("make the angles = 180") if a==b==c and a+b+c==180: print("equilateral") if a!=b!=c and a+b+c==180: print("scaleneeeeeeee") if a==b!=c and a+b+c==180: print("isosceles") if a!=b==c and a+b+c==180: print("isosceles") if a==c!=b and a+b+c==180: print("isosceles") else: print(" ")