DataSmash wrote:
Can someone help me understand why Example #1 & Example #2 will run
the functions,
while Example #3 DOES NOT?
Thanks for your time!
R.D.
def One():
print "running fuction 1"
def Two():
print "running fuction 2"
def Three():
print "running fuction 3"
# Example #1
fList = ["Two()","Three()"]
for func in fList:
exec func
In this case, func is set to the strings 'Two()' and 'Three()', then the
<exec func> line tells Python to evaluate the strings and execute them.
While this style can be useful, it is also *much* slower than example
2; if all you want is to cycle through the functions, a better way is:
--> fList = [Two, Three]
--> for func in fList:
--> func()
# Example #2
Two()
Three()
The functions Two and Three are called directly
# Example #2 <-- should be 3 :)
fList = ["Two()","Three()"]
for func in fList:
func
This is not calling func (no () at the end), and in fact doesn't do
anything if called as a script besides evaluate func -- it's a string,
but not being assigned anywhere, so unless you are running from the
interactive prompt where it will be echoed to screen, nothing happens.
~Ethan~
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