On 06/03/2011 09:42 AM, Cathy James wrote:
I need a jolt here with my python excercise, please somebody!! How can I
make my functions work correctly? I tried below but I get the following
error:
if f_dict[capitalize]:
KeyError:<function capitalize at 0x00AE12B8>
def capitalize (s):
Here you define the variable "capitalize" as a function.
f_dict = {'capitalize': 'capitalize(s)',
Here your dictionary's key is a *string* "capitalize" (not the
variable defined above)
if f_dict[capitalize]:
Here you use the function variable as an index into this dict,
not the string (which is the key that the dictionary contains).
Changing this to
if f_dict["capitalize"]:
it will find the item. Note that you'd have to change the other
keys too.
Finally, note that Python allows you to do function dispatch,
collapsing your entire if/elif tree to something like
f_dict = {# map of strings to the function-variable name
'capitalize': capitalize,
...
}
option = f_dict.get(inp, None)
if option is None:
do_whatever_error_processing(inp)
else: # "option" is the function so we can call directly
option(s)
-tkc
(sorry if a dupe...got an SMTP error)
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