Forum Discussion

John_Laird's avatar
John_Laird
Contributor
8 years ago

issue using dictionary

I having issues with using dictionaries in TC12 (python). When I add a key/value pair and then attempt a lookup via the key, I always get None (aka null). To be more specific, here is my script:   ...
  • HKosova's avatar
    HKosova
    8 years ago

    Hi John,

     

    Replace

    propvalLine.split(',')

    with

    propvalLine.split(', ')  # note the space

    Your propvalLine contains spaces after commas -- "CVS, PropFile, ..." so if splitting just by commas the key ends up being " PropFile" (with a leading space) instead of "PropFile".

     

    Alternatively, consider using Python's built-in CSV reader, which can handle delimiters and extra spaces for you:

    import csv

with open('C:\myfile.csv') as csvfile:
  reader = csv.reader(csvfile, skipinitialspace = True)
  dict = { line[1]: line[2] for line in reader if line[0] == 'CSV' }

Log.Message( dict['PropFile'] )
sanjay0288's avatar
sanjay0288
Frequent Contributor

Hi,

  Please change this line of your code  blah = csvPropValDict.Item["Prop_File"] to

 

blah = csvPropValDict.Item[propname]

 

OR

 

blah = csvPropValDict.Item['Prop_File']

 

sanjay0288's avatar
sanjay0288
Frequent Contributor
8 years ago

Hi

John_Laird Please find my comments

 

  Please change this line of your code  blah = csvPropValDict.Item["Prop_File"] to

 

blah = csvPropValDict.Item[propname]

 

OR

 

blah = csvPropValDict.Item['Prop_File']