1(), foo2()]
running foo1
running foo2
['bar1', 'bar2']
>>> [foo1, foo2]
[, ]
Do you see the difference now ? In the first case you call the two functions
and store their returned value in the list, while in the second you only
store the function objects themselves without calling them. You want the
second one.
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r_float_demo()' and 'the result of
use_for_integer_demo()'. This explains why the two functions are called. You
should rather use function objects like this:
# choose a function (note there are no () after the names)
func = choice([use_for_float_d
ind even more in the library
reference) :
http://docs.python.org/tut/node5.html#SECTION005140000
http://docs.python.org/tut/node7.html#SECTION00710
http://docs.python.org/tut/node7.html#SECTION00750
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= ['airlines-scheduled', 'airport-car-parking']
so you should rather write this (if y is a list too):
table[(tuple(x), tuple(y))] += 1
but of course you can also use tuples directly if your lists don't have to be
modified:
x = ('airlines-scheduled
but when I run this, I get the following error on the line:
>
> if x and y and (x, y) in table:
>
> TypeError: list objects are unhashable
>
> where:
>
> x = ['airlines-scheduled', 'airport-car-parking']
>
lists are not hashable because hashing a
display the menu
self.window1.config(menu=menubar)
def change_to_Colour_Picker (self) :
self.window1.destroy()
display_Colour_Picker_window()
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emoved_files = 0
for root, dir, file in ... :
...
if confirmation == 'y' :
os.remove(filename)
removed_files += 1
...
if removed_files :
print '%d files removed' % files_removed
else :
print 'No files found'
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Le Sunday 29 June 2008 22:32:23 David, vous avez écrit :
> Cédric Lucantis wrote:
> > Well, you're asking the user to enter -1 after the raw_input, so if the
> > file exists your script will just print 'File exists... -1 to quit' and
> > open it anyway. See
file
exists your script will just print 'File exists... -1 to quit' and open it
anyway. See my previous post for a better way of handling it, but in your
case you should at least do something like this:
filename = raw_input('Enter the filename: ')
if os.path.exists(filename):
r = raw_input('Warning, file %s exists, overwrite it [y/n] ? ' %
filename)
if r != 'y' : sys.exit(0)
fobj = open(...)
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th.exists and the open call), so you
should rather write it like this:
try: fd = os.open(filename, os.O_WRONLY | os.O_EXCL | os.O_CREAT)
except IOError, exc:
if exc.errno != errno.EEXIST : raise
print 'File %s already exists.' % filename
fobj = os.fdopen(fd)
(but I guess
for filename in glob.glob(full_pattern) :
os.remove(filename)
or you can do something similar with the fnmatch module. See
http://docs.python.org/lib/module-glob.html
http://docs.python.org/lib/module-fnmatch.html
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esignate the number of significant digits?
%g automatically choose the more readable form. Use %e for that:
>>>> '%e' % 1.0
'1.00e+00'
and to set the number of significant digits (it seems to only set the number
of digits after the comma, so yo
he PATH
environment variable by default. You can set it if you want but there are
some security problems with this so it's not recommended. Typing the
leading './' quickly becomes automatic for unix users.
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your code is equivalent to:
index = 0
while index < len(myList) :
myList[index] += 1
index += 1
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se :
return chapter3
def chapter2 () :
...
def main () :
# Store the 'chapter1' function in 'current_chapter'
# without calling it
current_chapter = chapter1
while True :
# Call the function stored in curren
possible from the rest of the program. This makes the
maintenance easier and improves reusability.
And open source is a sure way to learn a lot and write great softwares :)
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"Cool, you found the Holy Graal - YOU WON!",
[] ],
[ "go_back",
"A troll is in the way",
[["fight it", "fight_troll"],
["run away", "start"]] ],
[ "fight_troll",
"Sorry, it's stronger than you and you die - YOU LOST!",
[] ]
]
# start the game
run()
# --
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I got many tutorial with title *.py(e.g: Fibonacci.py and Password.py),
> can you explain me what *.py mean? Thank's for helping me.
.py is just the extension for python source files, so you're supposed to copy
the example in a file called Fibonacci.py and run
t, but until i write this:
> >>> while a != 0:
>
> print 'Current Sum:', s
> a = int(raw_input('Number?'))
> s = s+a
> print 'Total Sum =', s
>
> Oh, man... another error m
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