Share 110 Arithmetic Expressions + Input/Ouptut
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What would be stored in the variable result after the expression is executed in Python?
result = 10**3
1000
What would be stored in the variable result after the expression is executed in Python?
result = 10//3
3
What would be stored in the variable result after the expression is executed in Python?
result = 5 // 2 + 4 / 2
4.0
What would be stored in the variable result after the expression is executed in Python?
result = 6 + 4 * 3 - 2
16
The command used in Python to display something to standard output is
print
The command used in Python to read in input from standard input is
input
Does the following statement work or produce an error message when executed? If it works, what does it display?
value1 = 2.0
value2 = 3
print("The sum of ", value1, " and ", value2, "is", value1 + value2)
The sum of 2.0 and 3 is 5.0
Does the following statement work or produce an error message when executed? If it works, what does it display? value1 = 2.0 value2 = 3 print("The sum of " + value1 + " and " + value2 + "is" + (value1 + value2))
Error message
TypeError: can only concatenate str (not "float") to str
Suppose that we want to read in a data value from standard input. What are two things we'd need to consider in order to successfully write the Python statement to accomplish this goal?
1. What is a meaningful identifier?
2. Is the data going to be a string or a numeric type?
3. What should we say to prompt the user to enter the data?
Will this statement execute or produce an error message?
dataValue = int(input("Enter the quantity of candy bars that you wish to purchase: "))
Execute
I'm writing software for a pizza company and pizzas are 6.00. The software will ask the user to enter the number of pizzas that he/she is purchasing and store that as quantityOfPizza. Write an expression to calculate the total cost.
totalCost = quantityOfPizza * 6.00
I'm writing software for a pizza company and I want the user to enter his/her phone number. I wrote the following Python statement:
phoneNumber = input("Please enter your phone number")
Will this work well to store the phone number?
Yes, phone number will be stored as a string but we are unlikely to perform arithmetic calculations on the number so that's fine.
