Setting the location of a variable in a list to another variable - python

Question

alpha = ["A", "B", "C"]
morsecode = ["*-", "-***", "-*-*"]

string = raw_input(">> ")
list1 = list(string)

a1 = list1[0]

try:
   if a1 in alpha:
        a11 = alpha.index(a1)
        b1 = morsecode.index(a11)
        a1 = b1
        print a1

i want you to be able to type in "A" and it will print "*-"

Why don't you just use a dictionary? Make "alpha" the key, and "morsecode" the value. — Cory Kramer, Jan 20 '14 at 21:50
See the answer by iCodez. This is a very straight forward implementation of a dictionary. I suggest you read some introductory Python text as this is a very fundamental data structure. — Cory Kramer, Jan 20 '14 at 21:54

score 1 · Answer 1 · answered Jan 20 '14 at 21:53

i want you to be able to type in "A" and it will print "*-"

What you want to do can be accomplished quite easily with a dictionary:

>>> dct = {
...     "A" : "*-", 
...     "B" : "-***", 
...     "C" : "-*-*"
... }
>>> string = raw_input(">> ")
>> A
>>> print dct[string]
*-
>>>

dursk · Answer 2 · 2014-01-20T22:18:43.973

0

I think OP wants to handle more than a single character as input:

morse_code_dict = {"A": "*-", "B": "-***", "C": "-*-*"}

string = raw_input(">> ")

for char in string:
    print morse_code_dict[char],

edited Jan 20 '14 at 22:18

answered Jan 20 '14 at 21:54

dursk

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Yeah i trying to make a program that changes english into morse code – Slushy_G Jan 20 '14 at 21:57
The above should do that – dursk Jan 20 '14 at 21:57
it says the : is invalid syntax – Slushy_G Jan 20 '14 at 22:04
oh wait i used [ instead of { – Slushy_G Jan 20 '14 at 22:07
ok it works now, but is there a way to print it all on the same line? – Slushy_G Jan 20 '14 at 22:09
See the edit. Also, http://stackoverflow.com/questions/493386/how-to-print-in-python-without-newline-or-space – dursk Jan 20 '14 at 22:12
oh wait... were the parentheses supposed to print it on one line – Slushy_G Jan 20 '14 at 22:17
Try that, with just the comma at the end – dursk Jan 20 '14 at 22:19

score 0 · Answer 3 · answered Jan 21 '14 at 01:42

I agree that a dictionary is the proper data structure for this.

I you want to use a list, you could do something along these lines:

morsecode = ["*-", "-***", "-*-*"]

ch = raw_input(">> ")

try:
    print '"{}" in morses code:"{}"'.format(ch, morsecode[ord(ch)-ord('A')])
except IndexError:
    print 'no code for: "{}"'.format(ch)

Setting the location of a variable in a list to another variable - python

3 Answers3