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从Code Review 谈如何做技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...有多大？有多少用户受益？”，回答不清这个问题，没有数据的支持，就不做。所以，产品经理要做很多数据挖拙和用户调研的工作，而不是拍拍脑袋，听极少数的用户抱怨就要开需求了。
2）产品经理也要管理和教育的。你要...
How to assign a Git SHA1's to a file without Git?
... hash-object foo.txt
323fae03f4606ea9991df8befbb2fca795e648fa
Here is a Python implementation:
from hashlib import sha1
def githash(data):
s = sha1()
s.update("blob %u\0" % len(data))
s.update(data)
return s.hexdigest()
...
Why would anybody use C over C++? [closed]
...gies, poor programmers will fall foul and blame the language.
Interpreted Python is in many ways considered to be a "slow" language, but for non-trivial tasks a skilled Python programmer can easily produce code that executes faster than that of an inexperienced C developer.
In my industry, video g...
How to spread django unit tests over multiple files?
... module. This follows the suggested organization for unit
tests. See the Python documentation for more details on how to
construct a complex test suite.
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How can I increment a char?
I'm new to Python, coming from Java and C. How can I increment a char? In Java or C, chars and ints are practically interchangeable, and in certain loops, it's very useful to me to be able to do increment chars, and index arrays by chars.
...
URL encoding the space character: + or %20?
...though.
If I'm not mistaken, in PHP urlencode() treats spaces as + whereas Python's urlencode() treats them as %20.
EDIT:
It seems I'm mistaken. Python's urlencode() (at least in 2.7.2) uses quote_plus() instead of quote() and thus encodes spaces as "+".
It seems also that the W3C recommendation i...
Difference between Python datetime vs time modules
...
@Seamus Simply testing both commands in ipython shows that time.gmtime() yields a tuple, whereas time.time() gives the UNIX epoch time as a single decimal value of seconds elapsed since 00:00:00 UTC, Thursday, 1 January 1970. The function time.localtime(t) converts ...
GitHub README.md center image
... alignment
<img align="left" width="600" height="200" src="https://www.python.org/python-.png">
For right alignment
<img align="right" width="600" height="200" src="https://www.python.org/python-.png">
And for center alignment
<p align="center">
<img width="600" height="200...
how to create a file name with the current date & time in python?
... @rwbyrd That is odd, I just tried those exact 3 lines (copy-paste) with Python 3.4.1 and 2.7.6 and it works - though with Python 3 you need to use print(timestr). Did you copy this text from above? Perhaps a typo otherwise?
– Levon
Aug 25 '15 at 15:46
...
How to sort a dataFrame in python pandas by two or more columns?
...2f%2fstackoverflow.com%2fquestions%2f17141558%2fhow-to-sort-a-dataframe-in-python-pandas-by-two-or-more-columns%23new-answer', 'question_page');
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