大约有 3,516 项符合查询结果(耗时:0.0134秒) [XML]
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
... is_tuple = False
# Copy each item recursively
for x in xrange(len(obj)):
if type(obj[x]) in dignore:
continue
obj[x] = Copy(obj[x], use_deepcopy)
if is_tuple:
# Convert back into a tuple again
obj = tuple(ob...
File I/O in Every Programming Language [closed]
...hon-3-with-2to3.html . Second, in python 3 you can index an iterator. Type range(10)[4] in the shell (range() also returns an iterator in Python 3 in contrary to python 2 where range() returns a list). Note that range(N)[i] is done in O(i), not O(1) and not O(N).
– snakile
...
What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
...peat it here). My favourites, some of which involve other classes (such as ranges):
Date and time stuff - mostly for unit tests. Not sure I'd use them in production :)
var birthday = 19.June(1976);
var workingDay = 7.Hours() + 30.Minutes();
Ranges and stepping - massive thanks to Marc Gravell fo...
Python creating a dictionary of lists
...(list)
>>> a = ['1', '2']
>>> for i in a:
... for j in range(int(i), int(i) + 2):
... d[j].append(i)
...
>>> d
defaultdict(<type 'list'>, {1: ['1'], 2: ['1', '2'], 3: ['2']})
>>> d.items()
[(1, ['1']), (2, ['1', '2']), (3, ['2'])]
...
Insert picture into Excel cell [closed]
...s the ALT key and then move the picture with the mouse. It will
snap and arrange itself with the border of the cell as soon it comes
close to it.
If you have multiple images, you can select and insert all the images at once (as shown in step 4).
You can also resize images by selecting it and dr...
Aligning rotated xticklabels with their respective xticks
...the tickpoint?
Given your description, you want: ha='right'
n=5
x = np.arange(n)
y = np.sin(np.linspace(-3,3,n))
xlabels = ['Ticklabel %i' % i for i in range(n)]
fig, axs = plt.subplots(1,3, figsize=(12,3))
ha = ['right', 'center', 'left']
for n, ax in enumerate(axs):
ax.plot(x,y, 'o-')
...
What are the undocumented features and limitations of the Windows FINDSTR command?
... only way to match <CR> or <LF> is via a regex character class range expression that sandwiches the EOL characters.
[<TAB>-<0x0B>] matches <LF>, but it also matches <TAB> and <0x0B>
[<0x0C>-!] matches <CR>, but it also matches <0x0C> and ...
How to generate a Dockerfile from an image?
...p) \(MAINTAINER .*[^ ]\) *0 B,\1,p' | \
head -1
docker inspect --format='{{range $e := .Config.Env}}
ENV {{$e}}
{{end}}{{range $e,$v := .Config.ExposedPorts}}
EXPOSE {{$e}}
{{end}}{{range $e,$v := .Config.Volumes}}
VOLUME {{$e}}
{{end}}{{with .Config.User}}USER {{.}}{{end}}
{{with .Config.WorkingDir...
What is the pythonic way to unpack tuples? [duplicate]
...sts) too. Here's another example (from the Python tutorial):
>>> range(3, 6) # normal call with separate arguments
[3, 4, 5]
>>> args = [3, 6]
>>> range(*args) # call with arguments unpacked from a list
[3, 4, 5]
...
How to initialize array to 0 in C?
... Designated initializers are standard in C99. The use of ... to denote a range is a gcc-specific extension.
– Keith Thompson
Aug 8 '13 at 15:02
1
...