Python-排除双引号和括号内的数据

Question

I have a list which contains set of words in single quotes and double quotes, now i want to grep all the data only in single quotes.

Input_
sentence = ['(telco_name_list.event_date','reference.date)',"'testwebsite.com'",'data_flow.code',"'/long/page/data.jsp'"]

Output:

telco_name_list.event_date,reference.date,data_flow.code

I want to exclude the parenthesis and string in double quotes.

Answer 1

Since you tagged the post as python-3.x , I'm assuming you want to write python code. Based on your example this would work:

#!/usr/bin/env python3
Input_sentence = ['(telco_name_list.event_date','reference.date)',"'testwebsite.com'",'data_flow.code',"'/long/page/data.jsp'"]

comma = False
result = []
for i in range(len(Input_sentence)):
  e = Input_sentence[i]
  if e.startswith("'"): continue
  e = e.replace('(', '').replace(')', '') 
  if comma:
    print(",", end="")
  comma = True
  print(e, end="")
print()

This code iterates through the list, ignoring elements which begin with a single quote and filtering out parentheses from elements before printing them on stdout. This code works for the given example, but may or may not be what you need as the exact semantics of what you want out are somewhat ambiguous (ie is it fine to filter out all parentheses or just the ones at the beginning and end of your elements?).