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def add (n1, n2):
return n1 + n2
def subtract(n1, n2):
return n1 - n2
def multiply(n1, n2):
return n1 * n2
def divide(n1, n2):
return n1 / n2
operations = {"+": "add",
"-": "subtract",
"*": "multiply",
"/": "divide"
}
num1 = int(input("What's your first number?: "))
num2 = int(input("What's your second number?: "))
for symbol in operations:
print(symbol)
operation_symbol = input("Pick an operation from line above: ")
calculation_function = operations[operation_symbol]
answer = calculation_function[num1, num2] # This is line where the string induces must be integers is happening
print(f"{num1} {operation_symbol} {num2} = {answer}")
I am expecting to see the out put of the calculation.
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(I am pretty new to python)
Hey guys, so I was trying to code a simple python program which finds the HCF of two numbers, but I am getting an error when the two numbers are co-prime and the actual HCF is not showing for the two numbers
(Ex: The HCF for 12 and 24 should be 12 but python is showing 4
Here is the code, can any of you guys help me?
factors = []
print("Enter first number")
num1 = int(input())
print("Enter second number")
num2 = int(input())
if num1 < num2:
lesser = num1
else:
lesser = num2
for i in range(2, lesser + 2):
if num1 % i == 0 and num2 % i == 0:
factors.append(i)
if not factors:
print(num1, "and", num2, "are co-prime numbers, so they don't have any common factors")
str_factors = ', '.join(map(str, factors))
hcf = max(str_factors)
print(hcf)
You are turning factors into a comma separated string and using max on the string. It's giving you the max of the string lexicographically. You need to use max on the factors variable.
Say for a string '2, 12, 42, 13' max will return '4' because it loops through all characters in a string
Fix this line and it should produce you expected output
hcf = max(factors)
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num1 = float(input())
num2 = float(input())
soma = (num1 * 3.5 + num2 * 7.5) / (2 * 10)
print(f'MEDIA = {soma.:5}')
...fails with:
RUNTIME ERROR
File "<fstring>", line 1
(soma.)
^
SyntaxError: unexpected EOF while parsing
Please visit this link for more info about string formatting in python
num1 = float(input())
num2 = float(input())
soma = (num1 * 3.5 + num2 * 7.5) / (2 * 10)
print(f'MEDIA = {soma:.5f}')
Output:
$ python3.10 main.py
3
4
MEDIA = 2.02500
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I have been trying to print out this very simple equation but I cannot figure out why it will not print?
fc = float(input("first cycle is "))
fp = float(input("first percent is "))
sc = float(input("second cycle is "))
sp = float(input("second percent is "))
tc = float(input("third cycle is "))
tp = float(input("third percent is "))
mem = float(input("the memory is "))
first_part = (fc * fp + (sc(1-fp)))
print(first_part)
It gives me the error "TypeError: 'float' object is not callable"
The * multiplication operator cannot be omitted as it can in an algebraic equation. The interpreter thinks sc(1-fp) is a function call.
first_part = (fc * fp + (sc * (1-fp)))
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def factorial(n):
if(n == 1):
fact = 1
return fact
else:
fact = a * factorial(n - 1)
return fact
a = int(input("Enter a number to find its factorial: ")
if (a > 0):
print("The factorial of", a, "is:", fact)
else:
print("Enter a positive value to find its factorial")
In the above code it tells me that - NameError name 'fact' is not defined .
Lines starting from a = int... should be outside your function. Once that is done all you need is to add fact = factorial(a).
Find the correct logic below.
def recur_factorial(n):
if n == 1:
return n
else:
return n*recur_factorial(n-1)
num = 7
# check if the number is negative
if num < 0:
print("Sorry, factorial does not exist for negative numbers")
elif num == 0:
print("The factorial of 0 is 1")
else:
print("The factorial of", num, "is", recur_factorial(num))
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We are creating a calculator using python. I would like the user to input a number then operator then second number then the program prints out the result. For example, "User input calculation" ,User:5+9, and the computer prints out 14. I see its called the read-eval-print loop method. I need help converting that method into code and implemented.
Here is a simple calculator example to help get you started.
while True:
num1 = input('First Number: ')
num2 = input('Second Number: ')
op = input('Operator: ')
try:
num1 = int(num1)
num2 = int(num2)
except:
print('Input a valid number!')
continue
if op not in ['+', '-', '*']:
print('Invalid operator!')
continue
if op == '+':
print(str(num1 + num2))
elif op == '-':
print(str(num1 - num2))
elif op == '*':
print(str(num1 * num2))