Python SyntaxError keyword can t be an expression

Question

In a Python script I call a function from rpy2  but I get this error    using an R module  res   DirichletReg ddirichlet np asarray my values  alphas                                log False  sum up False   SyntaxError  keyword can t be an expression   What exactly went wrong here

User · Answer

I just got that problem when converting from % formatting to .format().

Previous code:

"SET !TIMEOUT_STEP %{USER_TIMEOUT_STEP}d" % {'USER_TIMEOUT_STEP' = 3}

Problematic syntax:

"SET !TIMEOUT_STEP {USER_TIMEOUT_STEP}".format('USER_TIMEOUT_STEP' = 3)

The problem is that format is a function that needs parameters. They cannot be strings. That is one of worst python error messages I've ever seen.

Corrected code:

"SET !TIMEOUT_STEP {USER_TIMEOUT_STEP}".format(USER_TIMEOUT_STEP = 3)

User · Answer

sum up is not a valid keyword argument name   Keyword arguments must be valid identifiers   You should look in the documentation of the library you are using how this argument really is called     maybe sum up

User · Answer

I guess many of us who came to this page have a problem with Scikit Learn  one way to solve it is to create a dictionary with parameters and pass it to the model   params     C   1e9   gamma   1e-07  cls   SVC   params

User · Answer

Using the Elastic search DSL API  you may hit the same error with  s   Search using client  index  my-index          query  match   category keyword  Musician     You can solve it by doing   s   Search using client  index  my-index          query   match     category keyword   Musician Band

User · Answer

It s python source parser failure on sum up False named argument as sum up is not valid argument name  you can t use dots -- only alphanumerics and underscores in argument names

[python] Python: SyntaxError: keyword can't be an expression

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