Getting list of parameter names inside python function

Question

Possible Duplicate    Getting method parameter names in python       Is there an easy way to be inside a python function and get a list of the parameter names   For example   def func a b c       print magic that does what I want     gt  gt  gt  func     a   b   c     Thanks

User · Answer

If you also want the values you can use the inspect module  import inspect  def func a  b  c       frame   inspect currentframe       args        values   inspect getargvalues frame      print  function name   s     inspect getframeinfo frame  2      for i in args          print       s    s     i  values i       return   i  values i   for i in args    gt  gt  gt  func 1  2  3  function name  func      a   1     b   2     c   3    a   1     b   2     c   3

User · Answer

import inspect  def func a b c 5       pass  inspect getargspec func     inspect signature func  in Python 3     a    b    c    None  None   5

User · Answer

locals   returns a dictionary with local names   def func a b c       print locals   keys      prints the list of parameters  If you use other local variables those will be included in this list  But you could make a copy at the beginning of your function

User · Answer

Well we don t actually need inspect here    gt  gt  gt  func   lambda x  y   x  y   gt  gt  gt    gt  gt  gt  func   code   co argcount 2  gt  gt  gt  func   code   co varnames   x    y    gt  gt  gt   gt  gt  gt  def func2 x y 3        print func2   code   co varnames       pass   Other things       gt  gt  gt  func2 3 3    x    y    gt  gt  gt    gt  gt  gt  func2   defaults    3     For Python 2 5 and older  use func code instead of   code    and func defaults instead of   defaults

[python] Getting list of parameter names inside python function

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