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How to create module-wide variables in Python? [duplicate]
...a module? When I tried to do it the most obvious way as appears below, the Python interpreter said the variable __DBNAME__ did not exist.
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Print a string as hex bytes?
I have this string: Hello world !! and I want to print it using Python as 48:65:6c:6c:6f:20:77:6f:72:6c:64:20:21:21 .
13...
Python int to binary string?
Are there any canned Python methods to convert an Integer (or Long) into a binary string in Python?
35 Answers
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Sending mail from Python using SMTP
I'm using the following method to send mail from Python using SMTP. Is it the right method to use or are there gotchas I'm missing ?
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In Python, how do I determine if an object is iterable?
... best approach:
from collections.abc import Iterable # drop `.abc` with Python 2.7 or lower
def iterable(obj):
return isinstance(obj, Iterable)
The above has been recommended already earlier, but the general consensus has been that using iter() would be better:
def iterable(obj):
try:...
Does Python have an ordered set?
Python has an ordered dictionary . What about an ordered set?
14 Answers
14
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How does Python's super() work with multiple inheritance?
I'm pretty much new in Python object oriented programming and I have trouble
understanding the super() function (new style classes) especially when it comes to multiple inheritance.
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What is the difference between an expression and a statement in Python?
In Python, what is the difference between expressions and statements?
14 Answers
14
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Check status of one port on remote host [closed]
...t scanner such as nmap or netcat, both of which are available for Windows, Linux, and Mac OS X.
For example, check for telnet on a known ip:
nmap -A 192.168.0.5/32 -p 23
For example, look for open ports from 20 to 30 on host.example.com:
nc -z host.example.com 20-30
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理解Python的 with 语句 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
理解Python的 with 语句With语句是什么？Python’s with statement provides a very convenient way of dealing with the situation where you
With语句是什么？
Python’s with statement provides a very convenient way of dealing with the situation where you have to do a setup an...