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Changing variable to integer


Hello

I receive such error:
File "p4.py", line 24, in PrintWordCountFloat
print "%s %f" % (word,words[word])
TypeError: list indices must be integers

i call PrintWordCountFloat with hash table, keys are words(string) and
values float.
This part of the code:

def PrintWordCountFloat(words):
number = 0
for word in words:
print "%s %f" % (word,words[word]) #line 24
number = number + 1
print "Total words: %d" %(number)

My function displays whole table correctly, and after that i receive
mentioned error.
Why ? Where is the problem ?

Thanx
Dec 17 '06 #1
7 1244

vertigo wrote:
Hello

I receive such error:
File "p4.py", line 24, in PrintWordCountFloat
print "%s %f" % (word,words[word])
TypeError: list indices must be integers

i call PrintWordCountFloat with hash table, keys are words(string) and
values float.
This part of the code:

def PrintWordCountFloat(words):
number = 0
for word in words:
print "%s %f" % (word,words[word]) #line 24
number = number + 1
print "Total words: %d" %(number)

My function displays whole table correctly, and after that i receive
mentioned error.
Why ? Where is the problem ?
Perhaps you meant something more along the lines of this:
>>def PrintWordCountFloat(words):
number = 0
for index, word in enumerate(words):
print "%s %f" % (index, word)
number = number + 1
print "Total words: %d" %(number)
>>PrintWordCountFloat(range(10))
0 0.000000
1 1.000000
2 2.000000
3 3.000000
4 4.000000
5 5.000000
6 6.000000
7 7.000000
8 8.000000
9 9.000000
Total words: 10

Or similar; I can't read your mind. Just know that enumerate(iterable)
yields (index, value) for each item in iterable.
Thanx
Dec 17 '06 #2
vertigo schrieb:
>
Hello

I receive such error:
File "p4.py", line 24, in PrintWordCountFloat
print "%s %f" % (word,words[word])
TypeError: list indices must be integers

i call PrintWordCountFloat with hash table, keys are words(string) and
values float.
This part of the code:

def PrintWordCountFloat(words):
number = 0
for word in words:
print "%s %f" % (word,words[word]) #line 24
number = number + 1
print "Total words: %d" %(number)

My function displays whole table correctly, and after that i receive
mentioned error.
Why ? Where is the problem ?
words is a list. If your variable names mean anything, I presume that
word is ... well, a word, thus a string. But you can't do

[1,2,4]['some_word']

That only works on dictionaries, like this:

{'some_word' : 100}['some_word']

Diez
Dec 17 '06 #3
vertigo wrote:
I receive such error:
File "p4.py", line 24, in PrintWordCountFloat
print "%s %f" % (word,words[word])
TypeError: list indices must be integers

i call PrintWordCountFloat with hash table, keys are words(string) and
values float.
This part of the code:

def PrintWordCountFloat(words):
number = 0
for word in words:
print "%s %f" % (word,words[word]) #line 24
number = number + 1
print "Total words: %d" %(number)

My function displays whole table correctly, and after that i receive
mentioned error.
Why ? Where is the problem ?
You could be calling PrintWordCountFloat() twice, once with a dictionary and
then with a list :-)

If I'm wrong, you have to provide more code.

Peter
Dec 17 '06 #4
vertigo wrote:
I receive such error:
File "p4.py", line 24, in PrintWordCountFloat
print "%s %f" % (word,words[word])
TypeError: list indices must be integers
please post the *entire* traceback message. see:

http://effbot.org/pyfaq/tutor-i-need...at-should-i-do

</F>

Dec 17 '06 #5
Perhaps you meant something more along the lines of this:
>>>def PrintWordCountFloat(words):
number = 0
for index, word in enumerate(words):
print "%s %f" % (index, word)
number = number + 1
print "Total words: %d" %(number)
>>>PrintWordCountFloat(range(10))
0 0.000000
1 1.000000
2 2.000000
3 3.000000
4 4.000000
5 5.000000
6 6.000000
7 7.000000
8 8.000000
9 9.000000
Total words: 10

Or similar; I can't read your mind. Just know that enumerate(iterable)
yields (index, value) for each item in iterable.

sorry, i was not precise. words is a dictionary.
1. How can i show it's all variable (with key and value) ?
2. How can i show sorted dictionary (by key) ?
3. Is there any function which could do fast iteration on elements of
sorted dictionary ?

Thanx
Dec 17 '06 #6
vertigo wrote:
Perhaps you meant something more along the lines of this:
>>def PrintWordCountFloat(words):
number = 0
for index, word in enumerate(words):
print "%s %f" % (index, word)
number = number + 1
print "Total words: %d" %(number)
>>PrintWordCountFloat(range(10))
0 0.000000
1 1.000000
2 2.000000
3 3.000000
4 4.000000
5 5.000000
6 6.000000
7 7.000000
8 8.000000
9 9.000000
Total words: 10

Or similar; I can't read your mind. Just know that enumerate(iterable)
yields (index, value) for each item in iterable.


sorry, i was not precise. words is a dictionary.
1. How can i show it's all variable (with key and value) ?
2. How can i show sorted dictionary (by key) ?
3. Is there any function which could do fast iteration on elements of
sorted dictionary ?

Thanx
I hope this helps a bit:
>>words = {"help":20, "copyright":25, "credits":35}
# show dictionary
>>for w, s in words.iteritems(): print w, s
....
credits 35
help 20
copyright 25
# show sorted dictionary
# dicts are not ordered, so you have to sort them.
>>for w, s in sorted(words.iteritems()): print w, s
....
copyright 25
credits 35
help 20

--
Juho Schultz

Dec 17 '06 #7
On Sun, 17 Dec 2006 17:00:46 +0100, Juho Schultz <ju**********@pp.inet.fi
wrote:
vertigo wrote:
Perhaps you meant something more along the lines of this:

def PrintWordCountFloat(words):
number = 0
for index, word in enumerate(words):
print "%s %f" % (index, word)
number = number + 1
print "Total words: %d" %(number)
PrintWordCountFloat(range(10))
0 0.000000
1 1.000000
2 2.000000
3 3.000000
4 4.000000
5 5.000000
6 6.000000
7 7.000000
8 8.000000
9 9.000000
Total words: 10

Or similar; I can't read your mind. Just know that enumerate(iterable)
yields (index, value) for each item in iterable.


sorry, i was not precise. words is a dictionary.
1. How can i show it's all variable (with key and value) ?
2. How can i show sorted dictionary (by key) ?
3. Is there any function which could do fast iteration on elements of
sorted dictionary ?

Thanx

I hope this helps a bit:
>>>words = {"help":20, "copyright":25, "credits":35}
# show dictionary
>>>for w, s in words.iteritems(): print w, s
...
credits 35
help 20
copyright 25
# show sorted dictionary
# dicts are not ordered, so you have to sort them.
>>>for w, s in sorted(words.iteritems()): print w, s
...
copyright 25
credits 35
help 20
Thanx, it's working :)
Dec 17 '06 #8

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