如何避免使用逗号分隔的字符串从python中的列表中加入引号

Question

I have created a comma separated string by joining strings from a list in Python 3.5 and use it to write it to an INI file using configobj. Here is a sample Python script used in a Ubuntu 16.04 terminal:

sudo python3 << EOP
from configobj import ConfigObj

config=ConfigObj("myconfig.ini")
config['items']={}
itemlist=('item1','item2')
csvstr=",".join(list)
config['items']['itemlist'] = csvstr
config.write()
EOP

This writes the string with quotes as "item1,item2" as shown below.

[items]
itemlist = "item1,item2"

However, if the items are joined with other characters such as ";", it writes the string without quotes! How to make it write the comma separated string without quotes?

Appreciate for any tips or solution.

Answer 1

Commas are reserved for field separation and so you cannot have (unless you really want to ) an unquoted string value with commas in it. Apparently you do want to have a list of values, so just pass a list as the value:

from configobj import ConfigObj

config=ConfigObj("myconfig.ini")
config['items']={}
itemlist=['item1','item2']
config['items']['itemlist'] = itemlist
config.write()

This will result in

[items]
itemlist = item1, item2

Answer 2

Another solution is to use the list_values keyword:

config = ConfigObj('myconfig.ini', list_values=False)

As the documentation says , if list_values=False then single line values are not quoted or unquoted when reading and writing.

The result:

[items]
itemlist = item1,item2