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+--- Thread: TypeError: '<' not supported between instances of 'str' and 'int' (/thread-23854.html)
TypeError: '<' not supported between instances of 'str' and 'int' - Svensation - Jan-20-2020
Dear all
I just tried my first steps with Python and found a - on the first sight - simple example in the internet. I tried to do it exactly the same way mentioned on the page. The programme looks as follows:
secret = 10
guess =0
i = 0
while guess != secret:
guess = input("Raten Sie: ")
if guess < secret:
print ("Zu klein")
if guess > secret:
print ("Zu gross")
i = i + 1
print ("Super, Sie haben es in "), i, ("Versuchen geschafft!")Unfortunately it shows me the message: TypeError: '<' not supported between instances of 'str' and 'int'What does that mean? What is wrong?
Thx for any help!
RE: TypeError: '<' not supported between instances of 'str' and 'int' - buran - Jan-20-2020
input() will return str. you need to convert it to int in order t do the comparison
RE: TypeError: '<' not supported between instances of 'str' and 'int' - Svensation - Jan-20-2020
Hi Buran
Thx for the information, will do better next time.
As I said I am an real beginner. What do you mean with
int? where do I have to place that?
RE: TypeError: '<' not supported between instances of 'str' and 'int' - buran - Jan-20-2020
the built-in function int()
guess = int(input("Raten Sie: "))note that incorrect input, that cannot be converted to int will raise an exceptionError:ValueError: invalid literal for int() with base 10RE: TypeError: '<' not supported between instances of 'str' and 'int' - Svensation - Jan-20-2020
thx a lot, it works!
Except the last line, as it doesn't count the number of trials. It only showes me the first piece of the print command.
RE: TypeError: '<' not supported between instances of 'str' and 'int' - buran - Jan-20-2020
it should be
print("Super, Sie haben es in ", i, "Versuchen geschafft!")however it's waaaaaaay better to use string formatting, e.g.using f-strings (python3.6+):
print(f"Super, Sie haben es in {i} Versuchen geschafft!")or str.format() method:print("Super, Sie haben es in {} Versuchen geschafft!".format(i))seehttps://docs.python.org/3/library/string.html#format-string-syntax
https://pyformat.info/