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Code for Greatest Common Divisor in Python [closed]
...port gcd
>>> gcd(20,8)
4
Source code from the inspect module in Python 2.7:
>>> print inspect.getsource(gcd)
def gcd(a, b):
"""Calculate the Greatest Common Divisor of a and b.
Unless b==0, the result will have the same sign as b (so that when
b is divided by it, th...
python multithreading wait till all threads finished
...
In Python3, since Python 3.2 there is a new approach to reach the same result, that I personally prefer to the traditional thread creation/start/join, package concurrent.futures: https://docs.python.org/3/library/concurrent.futu...
2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...移的问题。大家大胆的使用Scala作为主要编程语言，采用 Python作为脚本控制，比如产品组就是提供的课程产品，里面大量使用Play Framework，Javascript的backbone作为控制中枢。而架构组主要是维护底层存储，通用服务，性能和稳定性...
Replace console output in Python
I'm wondering how I could create one of those nifty console counters in Python as in certain C/C++-programs.
10 Answers
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Python CSV error: line contains NULL byte
...o.write(data.replace('\x00', '')) be fo.write(data.replace(b'\x00', b''))? Python 3.6 here...
– Boern
Jan 8 '19 at 9:08
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show 3 more commen...
Python recursive folder read
I have a C++/Obj-C background and I am just discovering Python (been writing it for about an hour).
I am writing a script to recursively read the contents of text files in a folder structure.
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How can I add new keys to a dictionary?
Is it possible to add a key to a Python dictionary after it has been created?
16 Answers
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Python : List of dict, if exists increment a dict value, if not append a new dict
... a dictionary, this is easy:
# This example should work in any version of Python.
# urls_d will contain URL keys, with counts as values, like: {'http://www.google.fr/' : 1 }
urls_d = {}
for url in list_of_urls:
if not url in urls_d:
urls_d[url] = 1
else:
urls_d[url] += 1
T...
Why is it string.join(list) instead of list.join(string)?
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This was discussed in the String methods... finally thread in the Python-Dev achive, and was accepted by Guido. This thread began in Jun 1999, and str.join was included in Python 1.6 which was released in Sep 2000 (and supported Unicode). Python 2.0 (supported str methods including join) wa...
Sorting dictionary keys in python [duplicate]
...815423426 you edited my post s/list/my_list/ because "list is a keyword in python". Your edit is fine, but list is not a keyword (c.f. docs.python.org/3/reference/lexical_analysis.html#keywords), so my program fragment would (bytecode-)compile and run. It is however a name in the __builtins__ name...