dictionaries

[Zach Shutters]

ok, i am trying to learn how to use dictionaries and i am having trouble
with this code:

def function1():
print "function1"

def function2():
print "function2"

dict = {"1":function1,"2":function2}
x = input ("1 or 2?")

dict[x]()

 

[Steven Bethard]

def function1():
print "function1"

def function2():
print "function2"

dict = {"1":function1,"2":function2}
x = input ("1 or 2?")

dict[x]()

Right idea, wrong type. From the docs at:

http://docs.python.org/lib/built-in-funcs.html

] input( [prompt])
]
] Equivalent to eval(raw_input(prompt)).

This means that when you use input, it will convert the "1" typed at the
prompt to the integer 1. So your code should either be:

d = {1:function1, 2:function2}
x = input("1 or 2? ") 1 or 2? 1
d[x]() function1

or

d = {"1":function1, "2":function2}
x = raw_input("1 or 2? ") 1 or 2? 1
d[x]()

function1

You also probably shouldn't name your dictionary 'dict' because then you
rebind the name 'dict', which is already the builtin 'dict' function.

Steve

 

[Zach Shutters]

Ok, I get it thanks!

def function1():
print "function1"

def function2():
print "function2"

dict = {"1":function1,"2":function2}
x = input ("1 or 2?")

dict[x]()

Right idea, wrong type. From the docs at:

http://docs.python.org/lib/built-in-funcs.html

] input( [prompt])
]
] Equivalent to eval(raw_input(prompt)).

This means that when you use input, it will convert the "1" typed at the
prompt to the integer 1. So your code should either be:

d = {1:function1, 2:function2}
x = input("1 or 2? ") 1 or 2? 1
d[x]() function1

or

d = {"1":function1, "2":function2}
x = raw_input("1 or 2? ") 1 or 2? 1
d[x]()

function1

You also probably shouldn't name your dictionary 'dict' because then you
rebind the name 'dict', which is already the builtin 'dict' function.

Steve