Python ruamel.yaml - 在转储 yaml 时保留单引号

Question

I am trying to dump the dictionary into yaml and facing the following issue.

connection = dict()
connection['authentication']= 'Username Password'
connection['dbname']= '{{client}}_DB'

ruamel.yaml.round_trip_dump(connection, sys.stdout)

What i got :

  connection:
    authentication: Username Password
    dbname: '{{client}}_DB'

We can see that single quote are removed from authentication but not from dbname.

What i expected:

  connection:
    authentication: 'Username Password'
    dbname: '{{client}}_DB'

Complete example from terminal

>>> import sys
>>> import ruamel.yaml
>>> connection = dict()
>>> connection['authentication']= 'Username Password'
>>> connection['dbname']= '{{client}}_DB'
>>> ruamel.yaml.round_trip_dump(connection, sys.stdout)
authentication: Username Password
dbname: '{{client}}_DB'
>>> print(connection)
{'authentication': 'Username Password', 'dbname': '{{client}}_DB'}
>>> 

yaml is printed without single quote. My requirement is to have single quote around the value

Answer 1

Quotes here just mean you input string. If you want add single quotes to 'Username Password' just use double quotes:

connection['authentication'] = "'Username Password'"