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How do you validate a URL with a regular expression in Python?
...= urlparse.urlparse(url)
assert all([pieces.scheme, pieces.netloc])
assert set(pieces.netloc) <= set(string.letters + string.digits + '-.') # and others?
assert pieces.scheme in ['http', 'https', 'ftp'] # etc.
It might be slower, and maybe you'll miss conditions, but it seems (to me) a lot ea...
Using os.walk() to recursively traverse directories in Python
... this:
root:.
[.]
┣━[.idea]
┃ ┣━[scopes]
┃ ┃ ┗━scope_settings.xml
┃ ┣━.name
┃ ┣━Demo.iml
┃ ┣━encodings.xml
┃ ┣━misc.xml
┃ ┣━modules.xml
┃ ┣━vcs.xml
┃ ┗━workspace.xml
┣━[test1]
┃ ┗━test1.txt
┣━[test2]
┃ ┣━[te...
Append an array to another array in JavaScript [duplicate]
...
If you want to modify the original array instead of returning a new array, use .push()...
array1.push.apply(array1, array2);
array1.push.apply(array1, array3);
I used .apply to push the individual members of arrays 2 and 3 ...
Git, rewrite previous commit usernames and emails
...ted a bunch of commits to a project on Github, however I realized I hadn't set up the proper email and committer full name on the computer I'm currently using to make my commits and therefore the users avatar and email address are not there.
...
Shell command to sum integers, one per line?
I am looking for a command that will accept (as input) multiple lines of text, each line containing a single integer, and output the sum of these integers.
...
What is the difference between \r and \n?
...dardized on NL--a character that doesn't even exist in the ASCII character set. In Unicode, NL is U+0085 NEXT LINE, but the actual EBCDIC value is 0x15.
Why did different systems choose different methods? Simply because there was no universal standard. Where your keyboard probably says "Enter",...
typedef struct vs struct definitions [duplicate]
I'm a beginner in C programming, but I was wondering what's the difference between using typedef when defining a structure versus not using typedef . It seems to me like there's really no difference, they accomplish the same goal.
...
Redirect stdout to a file in Python?
...
If you want to do the redirection within the Python script, setting sys.stdout to a file object does the trick:
import sys
sys.stdout = open('file', 'w')
print('test')
A far more common method is to use shell redirection when executing (same on Windows and Linux):
$ python foo.py ...
Android Paint: .measureText() vs .getTextBounds()
...text!";
Paint p = new Paint();
Rect bounds = new Rect();
p.setTextSize(60);
p.getTextBounds(s, 0, s.length(), bounds);
float mt = p.measureText(s);
int bw = bounds.width();
Log.i("LCG", String.format(
"measureText %f, getTextBounds %d (%s)",
...
linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...础知识还不了解,建议先去看看.开始配置我们来配置一个filter表的防火墙.(1)查看本机关于IPTABLES的设置情况[root@tp ~]...如果你的IPTABLES基础知识还不了解,建议先去看看.
开始配置
我们来配置一个filter表的防火墙.
(1)查看本机关于...