I realize the code snippet was bad. It was meant to be pseudo code. I was
on my phone and far from pc. Anyway....
I tried this:
already_seen = set()
for name in last_names:
if name in already_seen:
print("Already seen", name)
else:
already_seen.add(name)
I am not seeing a pattern in the output to give me a clue as to why it is
doing this. Also, it seems to be referencing chars when variable lastName
is an item in a list.
Unexpected output:
Python 3.2.3 (default, Apr 11 2012, 07:15:24) [MSC v.1500 32 bit (Intel)]
on win32
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART
================================
>>>
Already seen s
Already seen s
Already seen k
Already seen r
Already seen o
Already seen e
Already seen i
Already seen n
Already seen l
Already seen n
Already seen e
Already seen l
Already seen r
Already seen o
Already seen s
Already seen s
Already seen o
Already seen n
Already seen l
Already seen s
Already seen n
Already seen l
Already seen t
Already seen l
Already seen k
Already seen i
Already seen r
Already seen n
Already seen l
Already seen u
Already seen e
Already seen n
Already seen l
Already seen e
Already seen h
Already seen e
Already seen t
Already seen e
Already seen e
Already seen n
Already seen e
Already seen l
Already seen i
Already seen l
Already seen i
Already seen r
Already seen a
Already seen e
Already seen e
Already seen o
Already seen e
Already seen h
Already seen e
Already seen a
Already seen t
Already seen o
Already seen n
Already seen e
Already seen r
Already seen n
Already seen e
Already seen r
Already seen r
Already seen l
Already seen e
Already seen l
Already seen e
Already seen n
Already seen o
Already seen n
Already seen r
Already seen a
Already seen s
['John Cornyn (R)', 'Ted Cruz (R)']
New Mexico
Here is all my code:
def createList( filename ):
# print( filename )
senateInfo = {}
try:
info = open( filename, "r" )
for line in info:
# print( line )
dataOnLine = line.split( "\t" )
state = dataOnLine[ 0 ]
senator = dataOnLine[ 1 ]
if state in senateInfo: # Adding another
senator.
# Create a list of the both senators from that state.
incumbent = senateInfo[state]
senators = [ incumbent, senator ]
senateInfo[state] = senators
else:
senateInfo[state] = senator
#print( senateInfo )
info.close()
except:
print( filename, " did not open! qUITTING." )
return senateInfo
def createList2(filename):
List = []
senateInfo2 = {}
info = open( filename, "r" )
for line in info:
dataOnLine = line.split( "\t" )
state = dataOnLine[ 0 ]
senator = dataOnLine[ 1 ]
nameSplit = dataOnLine[ 1 ].split(" ")
if len(nameSplit) == 3:
lastName = nameSplit[1]
elif len(nameSplit) == 4:
lastName = nameSplit[2]
already_seen = set()
for name in lastName:
if name in already_seen:
print("Already seen", name)
else:
already_seen.add(name)
senateInfo2[lastName] = state
info.close()
return senateInfo2
def test( state, senatorsInfo ):
print( senatorsInfo[state] )
def test2( senator, usSenators ):
print( usSenators[senator] )
def main():
usSenators = createList( "USSenators.txt" )
usSenators2 = createList2( "USSenators.txt" )
test( "Texas", usSenators )
test2("Udall", usSenators2 )
main()
On Tue, Dec 3, 2013 at 7:54 PM, Steven D'Aprano <st...@pearwood.info> wrote:
> On Tue, Dec 03, 2013 at 11:55:30AM -0600, Byron Ruffin wrote:
> > What I am having trouble with is finding a way to say: if lastName
> appears
> > more than once, print something.
> >
> > I ran a bit of code:
> > For x in lastname
> > If lastname = udall
> > Print something
>
> You most certainly did not run that. That's not Python code. Precision
> and accuracy is vital when programming. Please tell us what you
> *actually* ran, not some vague summary which may or may not be in the
> right ballpark.
>
> Copy and paste is your friend here: copy and paste the block of code you
> ran, don't re-type it from memory.
>
> > This prints x twice.
> >
> > I think what I might be hung up on is understanding the ways that I can
> use
> > a loop. I know I need to loop through the list of names, which I have,
> and
> > set a condition dor the apppearance of a string occurring more than once
> in
> > a list but I don't know how to translate this to code. How do I say: if
> > you see it twice, do something?
>
> How do you know you've seen it twice? You have to remember the things
> you've seen before. The best way to do this is with a set, if possible,
> or if not, a list.
>
> already_seen = set()
> for name in last_names:
> if name in already_seen:
> print("Already seen", name)
> else:
> already_seen.add(name)
>
>
>
> Here's another way, not recommended because it will be slow for large
> numbers of names. (But if you only have a few names, it will be okay.
>
> for name in last_names:
> n = last_names.count(name)
> print(name, "appears %d times" % n)
>
>
> Can you combine the two so that the number of times a name appears is
> only printed the first time it is seen?
>
>
>
> --
> Steven
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