Why is this variable not defined in Python? : <p>I've been trying to make a python morse code translator and am over complicating it, I would like to continue on the path that I am going on for the morse code translator but I ran into a problem. </p>

<pre><code>Traceback (most recent call last):
  File "python", line 114, in &lt;module&gt;
NameError: name 'firstletter' is not defined
</code></pre>

<p>I couldn't figure out why this variable was not being defined. Here's the code</p>

<pre><code>wordinput = input("What do you want to convert")
word = str(wordinput.upper)

if word[0] == 'A':
    firstletter = ".-"
elif word[0] == "B":
    firstletter = "-..."
elif word[0] == 'C':
    firstletter = '-.-.'
elif word[0] == 'D':
    firstletter = '-..'
elif word[0] == 'E':
    firstletter = '.'
elif word[0] == 'F':
    firstletter = '..-.'
elif word[0] == 'G':
    firstletter = '--.'
elif word[0] == "H":
    firstletter = '....'
elif word[0] == "I":
    firstletter = '..'
elif word[0] == 'J':
    firstletter = ".."
elif word[0] == 'K':
    firstletter = '-.-'
elif word[0] == 'L':
    firstletter = '.-..'
elif word[0] == 'M':
    firstletter = '--'
elif word[0] == 'N':
    firstletter = '-.'
elif word[0] == 'O':
    firstletter = '---'
elif word[0] == 'P':
    firstletter = '.--.'
elif word[0] == 'Q':
    firstletter = '--.-'
elif word[0] == 'R':
    firstletter = '.-.'
elif word[0] == 'S':
    firstletter = '...'
elif word[0] == 'T':
    firstletter = '-'
elif word[0] == 'U':
    firstletter = '..-'
elif word[0] == 'V':
    firstletter = '...-'
elif word[0] == 'W':
    firstletter = '.--'
elif word[0] == 'X':
    firstletter = '-..-'
elif word[0] == 'Y':
    firstletter = '-.--'
elif word[0] == 'Z':
    firstletter = '--..'

if word[1] == 'A':
    secondletter = ".-"
elif word[1] == "B":
    secondletter = "-..."
elif word[1] == 'C':
    secondletter = '-.-.'
elif word[1] == 'D':
    secondletter = '-..'
elif word[1] == 'E':
    secondletter = '.'
elif word[1] == 'F':
    secondletter = '..-.'
elif word[1] == 'G':
    secondletter = '--.'
elif word[1] == "H":
    secondletter = '....'
elif word[1] == "I":
    secondletter = '..'
elif word[1] == 'J':
    secondletter = ".."
elif word[1] == 'K':
    secondletter = '-.-'
elif word[1] == 'L':
    secondletter = '.-..'
elif word[1] == 'M':
    secondletter = '--'
elif word[1] == 'N':
    secondletter = '-.'
elif word[1] == 'O':
    secondletter = '---'
elif word[1] == 'P':
    secondletter = '.--.'
elif word[1] == 'Q':
    secondletter = '--.-'
elif word[1] == 'R':
    secondletter = '.-.'
elif word[1] == 'S':
    secondletter = '...'
elif word[1] == 'T':
    secondletter = '-'
elif word[1] == 'U':
    secondletter = '..-'
elif word[1] == 'V':
    secondletter = '...-'
elif word[1] == 'W':
    secondletter = '.--'
elif word[1] == 'X':
    secondletter = '-..-'
elif word[1] == 'Y':
    secondletter = '-.--'
elif word[1] == 'Z':
    secondletter = '--..'





print(firstletter + secondletter)
import os
os.system("pause")
</code></pre>
