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How to step through Python code to help debug issues?
...ersions of modules and to experiment it more iteratively.
$ python
Python 2.7 (r27:82508, Jul 3 2010, 21:12:11)
[GCC 4.0.1 (Apple Inc. build 5493)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pdb_script
>>> import pdb
>>> p...
Check if all elements in a list are identical
...r to adapt comparison from a == b to a is b.
timeit result, for Python 2.7 and (only s1, s4, s7, s9 should return True)
s1 = [1] * 5000
s2 = [1] * 4999 + [2]
s3 = [2] + [1]*4999
s4 = [set([9])] * 5000
s5 = [set([9])] * 4999 + [set([10])]
s6 = [set([10])] + [set([9])] * 4999
s7 = [1,1]
s8 = [1,2...
Total memory used by Python process?
...id())
print(process.memory_info().rss) # in bytes
On my current Python 2.7 install with psutil 5.6.3, the last line should be
print(process.memory_info()[0])
instead (there was a change in the API).
Note: do pip install psutil if it is not installed yet.
...
当ORACLE 11G 遇到 JUNIPER 防火墙 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...MIOwKb3tFzqq_IGmpnrwZYeL9rqSr8LDVRva
这个是描述ORALCE 11G以前的版本。我通过在ORALCE 主机上事实监控端口发现全部都是从1521端口出去，并且结合网上的一些帖子。判断在ORACLE 11G在linux上是不存在端口随机的问题。
第三个说法，PL/SQ...
Setting the correct encoding when piping stdout in Python
...he problem just exist when piping to stdout .
I tested in Fedora 25 Python 2.7.13
python --version
Python 2.7.13
cat b.py
#!/usr/bin/env python
#-*- coding: utf-8 -*-
import sys
print sys.stdout.encoding
running ./b.py
UTF-8
running ./b.py | less
None
...
Programmatically change log level in Log4j2
...
In log4j 2.7 LoggerContext hasn't a getConfiguration() method, see logging.apache.org/log4j/2.x/log4j-api/apidocs/index.html?org/…
– maxxyme
Nov 23 '16 at 13:53
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Multiple variables in a 'with' statement?
...
It is possible in Python 3 since v3.1 and Python 2.7. The new with syntax supports multiple context managers:
with A() as a, B() as b, C() as c:
doSomething(a,b,c)
Unlike the contextlib.nested, this guarantees that a and b will have their __exit__()'s called even if ...
How to import a module given the full path?
...ngs = run_path("/path/to/file.py")
That interface is available in Python 2.7 and Python 3.2+
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Python dictionary from an object's fields
...
Note that best practice in Python 2.7 is to use new-style classes (not needed with Python 3), i.e.
class Foo(object):
...
Also, there's a difference between an 'object' and a 'class'. To build a dictionary from an arbitrary object, it's sufficient to us...
Open file in a relative location in Python
...ason), and you need to call os.path.abspath(__file__) first. osx/homebrew 2.7
– Cory Mawhorter
Jul 17 '13 at 21:35
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