The following Python code gives out error :
TypeError: 'int' object is not callable.
Can anyone help me out?
string = "This is a string, but I want to print it backwards"
stringLen = len(string)
newString = []
while stringLen >= 0:
newString.append(string[stringLen])
stringLen = stringLen - 1
result = ''.join(newString)
print(result)
No able to reproduce the error. However, you have an
Index out of range error.
This is because the indentation starts at 0. So string[stringLen]
is out of bound at the first iteration. To solve it, just shift it by one with a simple -1
operation.
Also, because we are now going in backward direction, we should stop when the counter is strictly superior to 0. If you go up to 0
, you will print the first character (so restarting iterating).
Here the code:
string = "This is a string, but I want to print it backwards"
stringLen = len(string)
newString = []
while stringLen > 0:
# Here string is shifted by 1
newString.append(string[stringLen-1])
stringLen = stringLen - 1
result = ''.join(newString)
print(result)
# sdrawkcab ti tnirp ot tnaw I tub ,gnirts a si sihT
You can check your output by just calling:
print(string[::-1])
# sdrawkcab ekil skool txet siht woh rednow I
Some explanations here
Hope that helps !
you can get the same result with this code :
string = "This is a string, but I want to print it backwards"
result=''.join(string[::-1])
print(result)
outbut:
sdrawkcab ti tnirp ot tnaw I tub ,gnirts a si sihT
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.