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Make Lesson 1 Task 2 use only one operation, added support for any nth roots

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Stanislav Mykhailenko 2022-10-19 20:06:42 +03:00
parent 8a65326755
commit 434c7bec09
Signed by: stanislavmykhailenko
GPG key ID: 1E95E66A9C9D6A36
1 changed files with 31 additions and 25 deletions
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56
Lesson_1/task2.py
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@ -6,10 +6,11 @@
# 0 - OK # 0 - OK
# 1 - Invalid numbers entered # 1 - Invalid numbers entered
# 2 - Division by zero # 2 - Division by zero
# 3 - Invalid first operation entered # 3 - Attempting to use a root with non-natural degree
# 4 - Square root of a negative number calculation # 4 - Attempting to extract a root of a negative number with an even degree
# 5 - Invalid operation entered
import sys, math import sys
try: try:
numberA = float(input("Enter number A: ")) numberA = float(input("Enter number A: "))
@ -18,37 +19,42 @@ except ValueError:
print("Invalid numbers entered.") print("Invalid numbers entered.")
sys.exit(1) sys.exit(1)
operation = input("Enter operation (+, − or -, × or *, ÷ or /): ") print(
'''
Valid operations:
Addition: +
Subtraction: - or −
Multiplication: * or ×
Division: / or ÷
Root: root or √ (extracted from the first number, with the second number being its degree)
Square: square or ² (of both numbers)''', end="\n\n"
)
# The other part of the task is not clearly defined. It asks to implement square root of a number, or its square, but it can only be done with one number. Assuming it is the result of the first operation and saving it… operation = input("Enter operation: ")
result: float
if operation == "+": if operation == "+":
result = numberA + numberB print(numberA + numberB)
elif operation == "-" or operation == "−": # ASCII hyphen-minus or Unicode minus elif operation == "-" or operation == "−": # ASCII hyphen-minus or Unicode minus
result = numberA - numberB print(numberA - numberB)
elif operation == "*" or operation == "×": # ASCII asterisk or Unicode multiplication sign elif operation == "*" or operation == "×": # ASCII asterisk or Unicode multiplication sign
result = numberA * numberB print(numberA * numberB)
elif operation == "/" or operation == "÷": # ASCII slash or Unicode division sign elif operation == "/" or operation == "÷": # ASCII slash or Unicode division sign
if numberB == 0: if numberB == 0:
print("Division by zero.") print("Division by zero.")
sys.exit(2) sys.exit(2)
else: else:
result = numberA / numberB print(numberA / numberB)
else: elif operation == "root" or operation == "√": # Unicode radical symbol
print("Invalid operation.") if numberB < 1 or not numberB.is_integer():
sys.exit(3) print("Can't extract a root with non-natural degree.")
sys.exit(3)
print("Result: " + str(result)) elif (numberB % 2) == 0 and numberA < 0:
print("Can't extract a root of a negative number with an even degree.")
# …and asking to do sqrt or square with it.
secondOperation = input("Do anything else with the result (√ or sqrt, ² or square, any other input will be ignored)? ")
if secondOperation == "√" or secondOperation == "sqrt": # Unicode radical symbol
if result < 0:
print("Can't get a square root of a negative number.")
sys.exit(4) sys.exit(4)
else: else:
print(math.sqrt(result)) print(numberA ** (1 / numberB))
elif secondOperation == "²" or secondOperation == "square": # Unicode superscript 2 elif operation == "square" or operation == "²": # Unicode superscript 2
print(math.pow(result, 2)) print("Number A square: " + str(numberA ** 2) + "\nNumber B square: " + str(numberB ** 2))
else:
print("Invalid operation.")
sys.exit(5)