From Java to Python

Python: equivalent to Java toString()

In Java, overrides toString() method in the your class can change the textual representation of the object. The equivalent in Python is __st...
Python: current time in milliseconds

import time ms = int(round(time.time() * 1000)) print(ms)
Python: call constructor of the super class

Option 1: class A(object): def __init__(self): print "world" class B(A): def __init__(self): print "hello" ...
Python: ElementTree XML element to string

import xml.etree.ElementTree as ET # element is an xml.etree.ElementTree.Element object xmlstr = ET.tostring(element, encoding='utf8...
Python: string equals ignore case

def equals_ignore_case(s1, s2): if s1 is None and s2 is None: return True if s1 is None and s2 is not None: return ...
Python: generates crc32 and adler32 checksum for big files

import zlib import sys import urllib2 def __zlib_csum(url, func): if isinstance(url, basestring if sys.version_info[0] < 3 else str...
python: return inside with block

if returns value inside with statement, will the file be closed eventually? The answer is YES with open('myfile.txt') as f: ...
Python: Code completion in pydev

Code Completion Type hinting with docstrings/comments New on PyDev 2.8.0 It's possible to provide hints for code-completion wi...
python: iterables and iterators

A class with __iter__() method or __getitem__() method is iterable. The __iter__() method returns an iterator. A iterator object has a next(...
Python: delete a item from a list

remove the first matching element: if e in list: list.remove(e) remove all occurrences: while e in list: list.remove(e) EAFP st...

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Thursday, August 28, 2014

Python: get the length of a utf-8 encoded string

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