https://www.python.org/
Simple server
Serve current folder as webserver
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| $ python -m SimpleHTTPServer 8080
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Reference:
Conditional operator
Normally in [C](http://en.wikipedia.org/wiki/C_(programming_language)) we write:
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| int total += (foo == bar) ? foo : 0;
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In python is look like:
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| total += foo if foo == bar else 0
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Reference:
Detect Operating System
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| import platform
print platform.system() """ The output will be 'Linux', 'Windows', or 'Java' """
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Define your own module
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def foo(): print "Hi, this is Foo"
def bar(): print "Hey, I'm Bar"
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How to use?
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| from foobar import foo, bar
foo() bar()
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Output will be
1 2
| Hi, this is Foo Hey, I'm Bar
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Reference:
dump object
1 2 3
| import pprint
pprint.pprint(obj);
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Reference:
Parsing text with regex
This is equivalent to PHP: preg_match_all
1 2 3 4
| import re
pattern = '(https?://\S+)' urls = re.findall(pattern, text)
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Reference:
Store chinese character in string
I had getting such an error:
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| SyntaxError: Non-ASCII character '\xe5' in file filename.py on line 13, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details
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Fortunately, I found a solution
Just have to add this line to the top of filename.py
Reference:
match all chinese character
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| import re
regex = re.compile(ur'([\u4e00-\ufaff]+)', re.UNICODE) text = u'this is 中文 char' matches = regex.findall(text)
print(matches[0])
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output:
NOTE: must indicate u
in front of the string
Reference:
read content from web
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| import urllib
url = 'http://yoururl.com/' content = urllib.urlopen(url).read()
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Reference:
Loop through month
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| def month_year_iter(start_month, start_year, end_month, end_year): ym_start= 12 * start_year + start_month - 1 ym_end= 12 * end_year + end_month - 1 for ym in range(ym_start, ym_end): y, m = divmod(ym, 12) yield y, m + 1
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Reference:
datetime minus month
6 months ago
1 2
| today = datetime.date.today() until_date = today - relativedelta(months=6)
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Reference:
Fabric
Store the bash command output in variable
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| from fabric.api import local
def foo(name): result = local('cat file%s' % name, capture=True) ...
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The output of the file will be stored in result
variable.
Reference: