python,please help. I want this code to ask someone if they are ok with the grade. if they say yes, it prints good! if they say no, it says oh well! if they dont say yes or no, i want it to print " please enter yes or no" and keep asking them that until they finally say yes or no. This is what i have so far and when i run it and DONT type yes or no, it spams "please enter yes or no" millions of time
theanswer= raw_input("Are you ok with that grade?")
while theanswer:
if theanswer == ("yes"):
print ("good!")
break
elif theanswer == ("no"):
print ("oh well")
break
else:
print "enter yes or no"
what do i need to do so that it works, ive been trying a lot
You need to have a blocking call in your else statement. Otherwise you will have an infinite loop because theanswer will always be true. Like asking for input:
theanswer= raw_input("Are you ok with that grade?")
while theanswer:
if theanswer == ("yes"):
print ("good!")
break
elif theanswer == ("no"):
print ("oh well")
break
else:
theanswer= raw_input("Please enter yes or no")
Here is a good resorce on Blocking vs Non-Blocking I/O. It's an important fundamental in any application.
or this (this separates the input logic from what you do with the answer):
theanswer = raw_input("Are you ok with that grade?")
while theanswer not in ('yes', 'no'):
theanswer = raw_input('Please enter yes or no')
if theanswer == "yes":
print("good!")
elif theanswer == "no":
print("oh well")
Basically in your code you have a while loop running that will only break if theanswer == yes or == no.
You are also not giving the possibility of changing the value of theanswer in your loop therefore => infinity loop.
add this to your code:
else:
print "enter yes or no"
theanswer= raw_input("Are you ok with that grade?")
This can be accomplished with recursion
def get_user_input(text):
theanswer= raw_input(text)
if theanswer == 'yes':
print('good!')
elif theanswer == ("no"):
print('oh well')
else:
get_user_input('enter yes or no')
get_user_input('Are you ok with that grade?')
Related
I've searched the web and this site and been messing around all day, trying 100 ways to get this simple little program working. I'm practicing endless While loops and string user inputs. Can anyone explain what I'm doing wrong? Thank you!
while True:
print("This is the start.")
answer = input("Would you like to continue? (Y/N) ")
answer = answer.islower()
if answer == "n":
print("Ok thank you and goodbye.")
break
elif answer == "y":
print("Ok, let's start again.")
else:
print("You need to input a 'y' or an 'n'.")
your code has one thing wrong answer.islower() will return boolean values True or False but you want to convert it into lower values so correct method will be answer.lower()
while True:
print("This is the start.")
answer = input("Would you like to continue? (Y/N) ")
answer = answer.lower() # change from islower() to lower()
if answer == "n":
print("Ok thank you and goodbye.")
break
elif answer == "y":
print("Ok, let's start again.")
else:
print("You need to input a 'y' or an 'n'.")
You just need one amendment to this line:
Instead of
answer = answer.islower()
Change to
answer = answer.lower()
I would appreciate some help with this:
I try to make a form-program of the "Then why worry" philosophy:
I wrote this code, but I can't understand how do I make the while loop repeat itself every time the user doesn't enter "yes" or "no" in both questions.
problem = str(input("Do you have a problem in life? "))
problem = problem.replace(" ", "").lower() #nevermind caps or spaces
while problem:
if problem not in ("yes","no"):
print("Please enter YES or NO")
if problem == "no":
break
if problem == "yes":
something = str(input("Do you have something to do about it? "))
something = something.replace(" ","").lower()
while something:
if something not in ("yes","no"):
print("Please enter YES or NO")
elif:
break
print("Then why worry?")
Your algorithm is linear, there is no loops in there. So, the only place you need a loop is when you try to get correct response from the user. So, I'd propose you to move that into a function and then your example turns into this:
def get_user_input(prompt):
while True:
reply = input(prompt).replace(" ", "").lower()
if reply in ['yes', 'no']:
return reply
print("Please enter YES or NO")
problem_exists = get_user_input("Do you have a problem in life? ")
if problem_exists == 'yes':
action_possible = get_user_input("Do you have something to do about it? ")
print("Then why worry?")
I'd suggest to use while True loops, so you can put the input code once, then with the correct condition and break you're ok
while True:
problem = input("Do you have a problem in life? ").lower().strip()
if problem not in ("yes", "no"):
print("Please enter YES or NO")
continue
if problem == "no":
break
while True:
something = input("Do you have something to do about it? ").lower().strip()
if something not in ("yes", "no"):
print("Please enter YES or NO")
continue
break
break
print("Then why worry?")
Using walrus operator (py>=3.8) that could be done easier
while (problem := input("Do you have a problem in life? ").lower().strip()) not in ("yes", "no"):
pass
if problem == "yes":
while (something := input("Do you have something to do about it? ").lower().strip()) not in ("yes", "no"):
pass
print("Then why worry?")
I am new to coding. It works alright until you guess a number. then it says either higher or lower eternally. Please help me understand what I've done wrong. I have tried searching the internet and trying to retype some of the code but it won't work. I am trying to make a conversation as well as a mini guess the number game.
Here's my Code
# Conversation A
import random
print("Answer all questions with 'yes' or 'no' and press ENTER")
print('Hello I am Jim the computer')
z = input('How are you? ')
if z == 'Good' or z == 'Great' or z == 'good' or z == 'great':
print("That's great!")
else:
print("Oh. That's sad. I hope you feel better.")
a = input("what's your name? ")
print(a + "? Thats a nice name.")
b = input('Do you own any pets? ')
if b == 'yes' or b == 'Yes':
print("That's cool. I love pets!")
else:
print("That's a shame, you should get a pet. ")
c = input("Do you like animals? ")
if c == 'yes' or c == 'Yes':
print("Great! Me too!")
else:
print("Oh that's sad. They're really cute. ")
d = input("Do you want to see a magic trick? ")
if d == "yes" or d == "Yes":
input("Ok! Think of a number between 1-30. Do you have it? ")
print("Double that number.")
print("Add ten.")
print("Now divide by 2...")
print("And subtract your original number!")
y = input("Was your answer 5? ")
if y == 'yes' or y == 'Yes':
print("Yay i got it right! I hope you like my magic trick.")
else:
print("Oh that's sad. I'll work on it. I really like magic tricks and games.")
else:
print("Ok. Maybe next time. I love magic tricks and games!")
e = input("Do you want to play a game with me? ")
if e == "yes" or e == "Yes":
randnum = random.randint(1,100)
print("I am thinking of a number between 1 and 100...")
if e == 'no' or e == 'No':
print("oh well see you next time" + a + '.')
guess = int(input())
while guess is not randnum:
if guess == randnum:
print("Nice guess " + a + "! Bye, have a nice day!")
if guess < randnum:
print("Higher.")
if guess > randnum:
print("Lower.")
You need to add a break statement when you want stop looping and move the input for guess inside the loop so you don't exit before printing the statement:
while True:
guess = int(input())
if guess == randnum:
print("Nice guess " + a + "! Bye, have a nice day!")
break
Edit: Also, you dont want to use is every time: Is there a difference between "==" and "is"?
I'm fairly new to Python and am currently just learning by making some scripts to use at work. Real simple, just takes user input and stores it in a string to be called later on. The questions are yes/no answers but I wish for the user to have the option to skip and for the question to be asked again at the end, how would I do this?
Currently this is what I've got:
import sys
yes = ('yes', 'y')
no = ('no', 'n')
skip = ('skip', 's')
power = str(raw_input("Does the site have power? (Yes/No): "))
if power.lower() in yes:
pass
elif power.lower() in no:
pass
elif power.lower() in skip:
pass
else:
print ''
print '%s is an invlaid input! Please answer with Yes or No' % power
print ''
exit()
then at the end of the script after all the questions have been asked I have this:
if power.lower() in skip:
power = str(raw_input("Does the site have power? (Yes/No): "))
if power.lower() in yes:
pass
elif power.lower() in no:
pass
else:
print ''
print '%s is an invlaid input! Please answer with Yes or No' % power
print ''
exit()
else:
pass
if power.lower == 'yes':
print 'Site has power'
else:
print 'Site doesnt have power, NFF.'
I understand this is very messy and I'm just looking for guidance/help.
Regards,
Trap.
Since you're rather new to Python I'll give you some tips:
Store all the questions which receive "skip" as a response into a list.
At the end of all your questions, iterate through (hint: "for" loop) all the questions which the user skipped and asked them again.
# Display the sum
print('The sum of {0} and {1} is {2}'.format(num1, num2, sum))
message=("is this correct")
Print=(message)
#store input
answer = input("yes/no:")
if answer == "yes": print("thank you")
if answer == "no": print("hmm, are you sure?")
#store input
answer = input("yes/no:")
if answer == "yes" : print("please call my suppot hotline: +47 476 58 266")
if answer == "no" : print("ok goodbye:)")
if someone had a solution for line 7 when answerd yes skiped to the end desplaing ok `goodbye:) thank you`
I have this problem when i run the program it all goes good an all, but when a user gets the right answer, the code does not print neither print("Good Job!") or print("Correct"). what is wrong with the code ?
import random
firstNumber = random.randint(1, 50)
secondNumber = random.randint(1, 50)
result = firstNumber + secondNumber
result = int(result)
print("Hello ! What\'s your name ? ")
name = input()
print("Hello !"+" "+ name)
print("Ok !"+" "+ name +" "+ "let\'s start !")
print("What is"+ " " + str(firstNumber) +"+"+ str(secondNumber))
userAnswer = int(input("Your answer : "))
while (userAnswer != result) :
if (userAnswer > result) :
print("Wrong")
else:
print("Wrong")
userAnswer = int(input("Your answer : "))
if (userAnswer == result):
print("Correct")
print("Good Job!")
break
input("\n\n Press to exit")
The problem is that your while-loop will only run as long as the first answer is wrong. Everything that is indented after while (userAnswer != result) will be ignored by Python if the first answer is right. So logically a first correct answer can never reach print("Correct"), since that would require the answer to be both wrong (to start the while loop) and right (to get to "Correct").
One option is to get rid of the while-loop, and just use if's. You get two chances this way, then you lose.
if (userAnswer == result):
print("Well done!")
else:
print("Wrong")
userAnswer = int(input("Your answer : "))
if (userAnswer == result):
print("Correct")
print("Good Job!")
else:
print("Nope all wrong you lose")
Another option is to make an infinite loop using While. (like #csharpcoder said)
while (True) :
userAnswer = int(input("Your answer : "))
if (userAnswer == result):
print("Correct")
print("Good Job!")
break
else:
print ("Wrong answer")
In the last option a wrong answer gets "Wrong answer" and the while-loop starts again, since True is of course still True. So you try again, until you get the right answer, which will bring you to "correct, good job" and then break (which stops the loop).
I struggled with while-loops and kind of getting it in my head that indentation means Python will treat it as 'one thing' and skip it all if I start it with something that's False.
If the answer is correct, then
while (userAnswer != result) :
will cause the loop contents to be skipped.
First of all, you get input outside of your loop and then don't do anything with it. If your answer is correct on the first try, you will get no output because userAnswer != result will be False immediately and your while loop won't run.
Some other points:
if (userAnswer > result) :
print("Wrong")
else:
print("Wrong")
is redundant because you are guaranteed to fall into one of these, as you will only get here if the answer is wrong (and therefore > or < result). Just print "Wrong" without a condition, as the only reason this would run is if the answer was wrong.
print("Correct")
print("Good Job!")
You can use \n to print on a new line instead of having multiple print statements together. Usually you only use multiple prints together for readability, but print("Correct\nGood job!") isn't that much less readable.
if (userAnswer == result):
#...
break
You don't need break here because the answer is already correct and the loop won't repeat anyway.
print("Hello !"+" "+ name)
print("Ok !"+" "+ name +" "+ "let\'s start !")
print("What is"+ " " + str(firstNumber) +"+"+ str(secondNumber))
Here, you append string literals to string literals ("Hello!" + " "). You don't need to do that as you can just write "Hello! ".
result = firstNumber + secondNumber
result = int(result)
The result (pun not intended) is already an integer, so you don't need to convert it.
How about using a infinite while loop something like this :
while (True) :
userAnswer = int(input("Your answer : "))
if (userAnswer == result):
print("Correct")
print("Good Job!")
break
else:
print ("Wrong answer")
In your logic if you enter the wrong answer first time and correct answer afterwards , then it will work as per your requirement , but if you enter the correct answer first time it will simple skip the while loop .
I played around a bit to refactor, in an attempt to make it more clear:
import random
name = input("Hello ! What's your name? ")
print("Hello, {name}!".format(name=name))
print("Ok, {name}, let's start!".format(name=name))
first_number = random.randint(1, 50)
second_number = random.randint(1, 50)
correct_answer = first_number + second_number
print("What is, '{first} + {second}'?".format(first=first_number,
second=second_number))
user_answer = None
while user_answer != correct_answer:
try:
user_answer = int(input("Your answer : ")) # ValueError will be raised if non integer value given
except ValueError:
print("Invalid Input!")
user_answer = None
if user_answer:
if user_answer == correct_answer:
print("Correct")
print("Good Job!")
else:
print('--> Wrong, try again!')
input("\n<< Press any key to exit >>")