almost 12 years

3.3 IndentationError: unindent does not match any outer indentation level

n = [3,5,7]
def myFun(x):
    x[1]+=3
    return x
print myFun(n)

I get the error : File “python”, line 2 def myFun(x): ^ IndentationError: unexpected indent Oops, try again. Make sure myFun adds 3 to the second element of the list.

Answer 5089b0fec99505020000152c

15 votes

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Similar issue here; return x was indented with multiple spaces where as my new code above it used tab.

Submitted by eberan

almost 12 years

1 comments

Submitted by Adefyer

over 11 years

thanks~ it worked

Answer 50d1048337d7565a49001c71

4 votes

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As few may have mentioned, the ‘return x’ line uses spaces instead of a tab therefore you must either use spaces when trying to do ‘x[1] += 3’ or erase the spaces for ‘return x’ and tab it.

Submitted by dataWhiz63549

almost 12 years

1 comments

Submitted by digitalSurfer02278

over 11 years

Thank you! I just backspaced on the two lines after the ‘def’ statement then indented using the space bar and it worked perfectly.

Answer 509e4a99bed3b90200001074

2 votes

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erase everything and then manually retyp it. Worked for me for some reason.

Submitted by Jordi2

almost 12 years

1 comments

Submitted by megaRunner45051

over 11 years

I Reset the window and retyped entire function def again. It worked.

Answer 5095bf9c6b51630200003ce4

1 vote

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Same issue, tried Sidi0u5’s code, didn’t work, deleted the whitespace between “def myFun(x):” and “x[1] += 3”, then added it again, still no luck. Then deleted the whitespace between “x[1] += 3” and “return x”, then added it again, and it worked.

Seems to be some sort of bug

Submitted by Auslegung

almost 12 years

1 comments

Submitted by SantiagoPortnoi

almost 12 years

I have done the same as you and it worked now.

Answer 5098e9645e46020200004397

1 vote

Permalink

My approach is to try out code in IDLE if it does not seem to work in the CodeAcademy window. I got the indentation error described above when using CodeAcademy, put the same code into IDLE and it worked fine. I then tried it again in CodeAcademy, making sure I left a blank line after return x. This made CodeAcademy ecstatically happy - or at least it allowed me to move on. Recommend using IDLE alongside CodeAcademy especially if you are using Python 3.

Submitted by cfrench

almost 12 years

1 comments

Submitted by Alchemisto

almost 12 years

Isn’t the CodeAcademy Python track only for Python 2.7?

Answer 507d648027379002000023a6

0 votes

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n = [3,5,7]

def myFun(x): x[1] += 3 return x print myFun(n)

This code worked fine for which appears to be the exact same as yours. Maybe try indenting everything again?

Submitted by Sidi0u5_4f2d512baafc6e0001012e32_deleted

almost 12 years

2 comments

Submitted by GrandPanj

almost 12 years

any idea why mine didn’t work? def myFun(*args): newArgs = args[0][1] newArgs += 3 return newArgs

gave me a few errors, and wouldn’t pass me

Submitted by GrandPanj

almost 12 years

actually, it just printed ‘8’, didnt print the rest of the list

Answer 507d849b7fde6602000030b3

0 votes

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I had the same problem. I put a space before and after the += and it worked.

Submitted by frances

almost 12 years

1 comments

Submitted by davidm

almost 12 years

Try putting a blank line after “return x”. I got the same error, and I think python sees “print myFun(n)” as part of the function if there isn’t the blank line.

Answer 5084148d8b1980020000499d

0 votes

Permalink

I came back and tried again today and it works. May have been a bug.

Submitted by shakeystacey

almost 12 years

Answer 50b8b28fab86d27ec1001032

0 votes

Permalink

This might sounds like crazy talk, but comb through the existing code when you get an error like this. If you’re code uses a different style of white spaces, then match theirs. If they use spaces, you use spaces. If they use tabs, you use tabs.

Some other languages on the site complain about a mixture of spaces and tabs. Python really should too since it results in errors.

Submitted by gjjones

almost 12 years

Answer 50bcef81b01058272500143f

0 votes

Permalink

n = [3,5,7] def myFun(x): ——-x[1] += 3 ————–return x print myFun(n)

I indented ‘return’ to the variable change and it seemed to work. This seems odd to me. I was under the impression that you ‘returned’ functions and so should be indented as such..