ValueError: too many values to unpack,>>>

[Steve Holden]

Shawn Minisall wrote:
> Fredrik Lundh wrote:
>> Shawn Minisall wrote:
>>
>>   
>>> Sorry, it looks like it's on the fourth line with the 3 values on line 
>>> 4...its reading line 3 fine
>>>
>>> Traceback (most recent call last):
>>>   File "<pyshell#0>", line 1, in <module>
>>>     main()
>>>   File "I:\COMPUTER PROGRAMMING CLASS\PROJECT #1\project1.py", line 33, 
>>> in main
>>>     deposit1, deposit2, deposit3 = string.split(line, "\t")
>>> ValueError: too many values to unpack
>>>     
>> instead of fumbling around in the dark, try inserting a print statement 
>> before the offending line, so you can see what you're trying to unpack:
>>
>>      print string.split(line, "\t") # see what it is
>>      deposit1, deposit2, deposit3 = string.split(line, "\t")
>>
>> </F>
>>   
> I did and it printed everything up until the 3rd line with 3 numbers for 
> deposits.  I have since figured it out...the teacher put in an extra tab 
> after the last value so python thought it was 4 values for three.  I 
> went back into the file and deleted the extra tab after the 3rd number 
> and saved it...now it's working fine. 
> 
> I'm going to kill her...
> 
> ;)
> 
Alternatively you could use the additional argument to split() that 
tells is the maximum number of splits to [erforms, then strip any 
trailing whitespace off before using the values.

That way tou might get an extra mark for not amending the data file. 
It's called "defensive programming", and you need t take it seriously 
(as does everyone who programs).

regards
  Steve
-- 
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Sorry, the dog ate my .sigline