CODEWITHSUNDEEP
pythonjsonpath
Priyanka
Priyanka

Reputation: 1

jsonpath_ng.lexer.JsonPathLexerError: Error on line 1, col 8: Unexpected character: /

I am using jsonpath_ng library to build a jsonpath expression.But getting error while parsing expression as expression contains /. jsonpath_ng.lexer.JsonPathLexerError: Error on line 1, col 8: Unexpected character: /

Tried jsonpath_rw_ext,jsonpath_ng.ext libraries ,still facing similar errors.

from jsonpath_ng import jsonpath,parse
jsonpath_expression = parse('$.paths./createJob.post.parameters[0].schema.$ref') ```

Upvotes: 0

Views: 1966

Answers (1)

Luke Woodward
Luke Woodward

Reputation: 64959

The error is arising because the jsonpath_ng library appears to interpret the / symbol as numeric division, not as a valid character in identifiers.

At the same time, however, it's unusual (though not impossible) for the JSON to have / characters in property names.

As I see it, what you need to do depends on the data you have:

  1. If your JSON genuinely has a / character in property names, i.e. it looks like the following:

    {"paths": {"/createJob": {"post": ... } } }

    then you'll need to use the bracket notation (['propertyname']) instead of the dot notation (.propertyname):

    jsonpath_expression = parse("$.paths['/createJob'].post.parameters[0].schema.$ref")

  2. If your JSON doesn't actually have / characters in property names, then you should just delete the / from your JSON Path expression.

Note that I cannot guarantee either of these approaches to return data, because you haven't provided any sample data to query nor the expected result of running the JSON Path query.

Upvotes: 2

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