I'm trying to use the scipy.optimize code as an example to be able to avoid using *eval* to call a function named by a string.
The following appears to be the code used to do this: # from scipy optimize > def wrap_function(function, args): > ncalls = [0] > if function is None: > return ncalls, None > > def function_wrapper(*wrapper_args): > ncalls[0] += 1 > print(type(function)) > return function(*(wrapper_args + args)) > > return ncalls, function_wrapper where I should be able to use it to make the following work: > def sqr(x): > return x**2. > > > func = 'sqr' > > args=() > fcalls, func = wrap_function(func, args) > > x=3 > func(x) where I get: > <class 'str'> > > --------------------------------------------------------------------------- > TypeError > Traceback (most recent call last) > > <ipython-input-32-832f2a14d895> in <module>() > 7 > 8 x=3 > ----> 9 func(x) > > > > <ipython-input-19-6f99e62c64af> in function_wrapper(*wrapper_args) > 8 ncalls[0] += 1 > 9 print(type(function)) > ---> 10 return function(*(wrapper_args + args)) > 11 > 12 return ncalls, function_wrapper > > > > TypeError: 'str' object is not callable This works in *optimize* but not for me. What am I missing? I've seen this done with dictionaries on some pages, but it seems that this is intended to be faster (which will become necessary for me in the future). Thanks, Joe _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
