在 2013年11月7日星期四UTC+8上午11时53分09秒，Anthony Papillion写道：
> Hello Everyone,
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> I'm writing a little helper script in Python that will access a JSON
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> formatted argument from the shell when it's called. The parameter will
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> look like this:
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> {"url":"http://www.google.com"}
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> So, if my program is called "getargfromcli.py" the call will look like this:
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> getargfromcli.py {"url":"http://www.google.com"}
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> In the case above, I assume my JSON string will be argv[1]. In fact,
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> when I do
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> print sys.argv[1]
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> It works as expected and prints out the JSON string as expected like
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> this: {url:http://www.google.com}
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> Now, for the harder part. When I try to PARSE this JSON using this code:
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> json_string = json.loads(sys.argv[1])
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> I get an error saying that "No JSON object could be decoded". Even
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> though this looks like valid JSON and was generated by a JSON generator.
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> Can anyone tell me what I'm doing wrong? Basically, I want to eventually
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> get the value of url into a string.
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> Thanks!
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> anthony
Hi Anthony Papillion.
I'm fresh to Python, but I do love its short simple and graceful.
I've solved your problem. You could try the code below:
getargfromcli.py "\"{'url':'http://www.google.com'}\""
AS command line will strip your ".
From the Python document, we could get the info as:
json.loads('["foo", {"bar":["baz", null, 1.0, 2]}]')
the json.loads' argument should be string. Try it:)
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