Split by comma and how to exclude comma from quotes in split … Python

Question

python 2.7 code

cStr = \'\"aaaa\",\"bbbb\",\"ccc,ffffd\"\' 

newStr = cStr.split(\',\')

print newStr 

# result : [\'\"aaaa\"\',\'\"bbbb\"\',\'\"ccc\',\'ffffd\         


        

Answer 1

pyparsing has a builtin expression, commaSeparatedList:

cStr = '"aaaa","bbbb","ccc,ffffd"' 
import pyparsing as pp
print(pp.commaSeparatedList.parseString(cStr).asList())

prints:

['"aaaa"', '"bbbb"', '"ccc,ffffd"']

You can also add a parse-time action to strip those double-quotes (since you probably just want the content, not the quotation marks too):

csv_line = pp.commaSeparatedList.copy().addParseAction(pp.tokenMap(lambda s: s.strip('"')))
print(csv_line.parseString(cStr).asList())

gives:

['aaaa', 'bbbb', 'ccc,ffffd']