Configparser and string with %
Question:
Stupid question with (for sure) simple answer…
I am using configparser to read some strings from a file. When the string has the ‘%’ symbol ($%& for example) it complains:
ConfigParser.InterpolationSyntaxError: ‘%’ must be followed by ‘%’ or ‘(‘, found: “%&'”
Anybody familiar with this?
Thanks!
Answers:
If you don’t want environment variable substitution, then use RawConfigParser, not ConfigParser.
Write two %:
V = ('%%', 'MHz', 'GHz')
result:
('%', 'MHz', 'GHz')
By default, ConfigParser has interpolation of values enabled. That means that you can use variables inside your properties files.
Since Python 3.2, you can disable interpolation in the constructor:
configParser = configparser.ConfigParser(interpolation=None)
If you don’t want to disable interpolation, you must escape the % sign by putting two consecutive %% in the properties file as shown in the example of the documentation.
Note that RawConfigParser is a legacy variant. From the python documentation:
Consider using ConfigParser instead which checks types of the values
to be stored internally. If you don’t want interpolation, you can use
ConfigParser(interpolation=None).
Stupid question with (for sure) simple answer…
I am using configparser to read some strings from a file. When the string has the ‘%’ symbol ($%& for example) it complains:
ConfigParser.InterpolationSyntaxError: ‘%’ must be followed by ‘%’ or ‘(‘, found: “%&'”
Anybody familiar with this?
Thanks!
If you don’t want environment variable substitution, then use RawConfigParser, not ConfigParser.
Write two %:
V = ('%%', 'MHz', 'GHz')
result:
('%', 'MHz', 'GHz')
By default, ConfigParser has interpolation of values enabled. That means that you can use variables inside your properties files.
Since Python 3.2, you can disable interpolation in the constructor:
configParser = configparser.ConfigParser(interpolation=None)
If you don’t want to disable interpolation, you must escape the % sign by putting two consecutive %% in the properties file as shown in the example of the documentation.
Note that RawConfigParser is a legacy variant. From the python documentation:
Consider using ConfigParser instead which checks types of the values
to be stored internally. If you don’t want interpolation, you can use
ConfigParser(interpolation=None).