Percent-encoding options
| Name | Description | 
|---|---|
| encoding_opts[constructor] | Constructs an encoding_optsobject with the specified options. | 
| Name | Description | 
|---|---|
| disallow_null | True if nulls are not allowed | 
| lower_case | True if hexadecimal digits are emitted as lower case | 
| space_as_plus | True if spaces encode to and from plus signs | 
These options are used to customize the behavior of algorithms which use percent escapes, such as encoding or decoding.