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MQTT报文多个数据的提取 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...的连接mqtt服务器并订阅主题，把对应的数据按顺序提取到标签1，标签2，标签3……我把画面和mqtt订阅的数据发上来，求解救！！
{
"RTValue": [
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"name": "GQ-YIWAN...
Linux command or script counting duplicated lines in a text file?
...
Here is a simple python script using the Counter type. The benefit is that this does not require sorting the file, essentially using zero memory:
import collections
import fileinput
import json
print(json.dumps(collections.Counter(map(str.st...
How to get the seconds since epoch from the time + date output of gmtime()?
...gs like "right" timezones that use TAI time scale are not common. See Does Python's time.time() return the local or UTC timestamp?
– jfs
Aug 22 '16 at 10:19
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How can I easily fixup a past commit?
...w merge fixup commit into broken commit
ORIGINAL ANSWER
Here's a little Python script I wrote a while ago which implements this git fixup logic I hoped for in my original question. The script assumes that you staged some changes and then applies those changes to the given commit.
NOTE: This scri...
Google Authenticator available as a public service?
...ou can use my solution, posted as the answer to my question (there is full Python code and explanation):
Google Authenticator implementation in Python
It is rather easy to implement it in PHP or Perl, I think. If you have any problems with this, please let me know.
I have also posted my code ...
How to write a multidimensional array to a text file?
... oned_as='row')
# For the above line, I specified the kwarg oned_as since python (2.7 with
# numpy 1.6.1) throws a FutureWarning. Here, this isn't really necessary
# since oned_as is a kwarg for dealing with 1-D arrays.
# Now load in the data from the .mat that was just saved
matdata = scipy.io...
Why does this iterative list-growing code give IndexError: list assignment index out of range?
...ist. You'd just do:
j = list(i)
Alternatively, if you wanted to use the Python list like an array in other languages, then you could pre-create a list with its elements set to a null value (None in the example below), and later, overwrite the values in specific positions:
i = [1, 2, 3, 5, 8, 13]...
How to subtract a day from a date?
I have a Python datetime.datetime object. What is the best way to subtract one day?
6 Answers
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Aliases in Windows command prompt
...;"C:\Program Files\Sublime Text 2\"
:: Add to path by command
DOSKEY add_python26=set PATH=%PATH%;"C:\Python26\"
DOSKEY add_python33=set PATH=%PATH%;"C:\Python33\"
:: Commands
DOSKEY ls=dir /B
DOSKEY sublime=sublime_text $*
::sublime_text.exe is name of the executable. By adding a temporar...
Understanding dict.copy() - shallow or deep?
...w copy of the dictionary. Same goes for the book I am following (Beazley's Python Reference), which says:
7 Answers
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