Use awk/sed scripting to extract function parameters

Question

I have Python code from which I want to extract HTTP parameters.

In the following: how can I leave the def lines alone, but from remaining lines preserve only what is within params['...'] perhaps with multiple params['...'] on one line:

Input:

def delete_bazooka (request):
    BType.objects.get(id=params['id']).delete()
    BType.objects.get(name=params['name']).delete()
def create_bazooka (request):
  s = Skill.objects.get(id=params['skill'])
  l = Level.objects.get(id=params['level'])
  bt = BType.objects.get(name=params['type'])
  b = Bazooka(type=qt, bin=b, bin_sequence=b.count, text=params['text'], explanation=params['chocolate'], passage=p)
def delete_hoop (request):
  h = Hoop.objects.get(id=params['id'])

Desired Output:

def delete_bazooka (request):
id
name
def create_bazooka (request):
skill
level
type
text chocolate
def delete_hoop (request):
id

you mean you want to print the value of params keys? That would be simply: print params["id"], or if there are multiple ones: for key in params: print params[key] — Pawel Miech
– Pawel Miech, Commented Sep 19, 2013 at 6:13
@Pawelmhm no, i am analyzing python code using awk/sed. i cannot run it. i want to document it. — necromancer
– necromancer, Commented Sep 19, 2013 at 6:15

tuxcanfly · Accepted Answer · 2013-09-19 06:23:11Z

3

You can use grep `with the E (regexp) and o (only matching) flags:

grep -Eo "(?def .*|'[a-z]+')" test.txt

answered Sep 19, 2013 at 6:23

tuxcanfly

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Comments

Jotne · Accepted Answer · 2013-09-19 07:50:04Z

1

Using awk

awk -F\' '{$0=/^def/?$0:$2" "$4}1' test.txt

answered Sep 19, 2013 at 7:50

Jotne

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1 Comment

necromancer Over a year ago

this hardcodes for 1 or 2 but fails for n params on 1 line; the other answer chosen as correct works for n. upvoted regardless because my id is no_answer_not_upvoted ;-)

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