I am new to python and I'm trying to make a command kind of thing for a program with raw_input and functions. For some reason it hasn't been working. Here is the code I've been testing with:
raw_input()
def test():
print "hi, this will be amazing if it works"
raw_input
will block until you type something in. When a newline is received (user presses enter) the value will be returned and can be stored. It does not appear you are ever trying to call your function test
. Perhaps you want to try something like this (I can explain further if you need it)
name = raw_input("What is your name: ")
def test(username):
print "Hi %s, this will be amazing if it works" % (username,)
test(name)
Based on your other comments, this is the safe way to do this:
# Define two functions test() and other()
def test():
print "OMG, it works..."
def other():
print "I can call multiple functions"
# This will be to handle input for a function we don't have
def fail():
print "You gave a bad function name. I only know about %s" % (", ".join(funcs.keys()))
# This is a dictionary - a set of keys and values.
# Read about dictionaries, they are wonderful.
# Essentially, I am storing a reference to the function
# as a value for each key which is the value I expect the user to ender.
funcs = {"test": test, "other": other}
# Get the input from the user and remove any trailing whitespace just in case.
target = raw_input("Function to run? ").strip()
# This is the real fun. We have the value target, which is what the user typed in
# To access the value from the dictionary based on the key we can use several methods.
# A common one would be to use funcs[target]
# However, we can't be sure that the user entered either "test" or "other", so we can
# use another method for getting a value from a dictionary. The .get method let's us
# specify a key to get the value for, as wel as letting us provide a default value if
# the key does not exist. So, if you have the key "test", then you get the reference to
# the function test. If you have the key "other", then you get the reference to the
# function other. If you enter anything else, you get a reference to the function fail.
# Now, you would normally write "test()" if you wanted to execute test. Well the
# parenthesis are just calling the function. You now have a reference to some function
# so to call it, you have the parenthesis on the end.
funcs.get(target, fail)()
# The above line could be written like this instead
function_to_call = funcs.get(target, fail)
function_to_call()