EdisonChendi

#coding:UTF-8

s1 = "my name is Hulk"
s2 = "my name is Iron man"
s3 = "your job is save the word"

from collections import defaultdict
import re
import math
from string import whitespace, punctuation, ascii_uppercase

EdisonChendi

#coding:UTF-8

from math import inf, floor
from time import time
from random import randint

def linear_find_peak_1d(l, start, end):
    minus_inf = -1 * inf
    l = [minus_inf] + l[start:end] + [minus_inf]
    for i in range(1, len(l)+1):

EdisonChendi

# Python . operator search order
# 1. if magic methods are used implicitly, those methods on object's type are used
# 2. __getattributes__(self, attr)
# 3. object's type's __dict__ and it's a data descriptor, return it
# 4. object's __dict__ and it's a data descriptor, return it
# 5. object's __dict__ then object's type's __dict__
# 6. __getattr__
# 7. raise AttributeError

EdisonChendi

# coding:UTF-8

import sys
import traceback

def a():
    print("a")
    b()

def b():

EdisonChendi

// https://github.com/hugeen/burst/blob/master/core/event.js
// http://stackoverflow.com/questions/29413222/what-are-the-actual-uses-of-es6-weakmap
// the main strength of WeakMap is that it does not interfere with garbage collection given that they do not keep a reference
var listenableMap = new WeakMap();


export function getListenable (object) {
    if (!listenableMap.has(object)) {
        listenableMap.set(object, {});
    }

EdisonChendi

# coding=UTF-8

import operator
engineers = [{"name": "John", "age": 28}, {"name": "Peter", "age": 20}, {"name": "Paul", "age": 33}]
engineers_sorted_by_age = sorted(engineers, key=operator.itemgetter("age"))
print(engineers_sorted_by_age)
print(engineers)
engineers.sort(key=operator.itemgetter("age"), reverse=True)
print(engineers)

EdisonChendi

# coding=UTF-8
import types

# multi-line string
def multi_line_str():
    s = ('select * '
         'from atable '
         'where afiled="value"')
    print(s)

EdisonChendi

# coding=UTF-8

class Engineer(object):

    def __init__(self, name, specialty):
        self.name = name
        self.specialty = specialty

    def __repr__(self):
        # __repr__ is for developers

EdisonChendi

# coding=UTF-8

def append(newitem, l = []):
    l.append(newitem)
    print(l)

print(append.func_defaults) # []
append(10)
print(append.func_defaults) # [10]
append(20)

EdisonChendi

# coding=UTF-8

class User(object):

    def __init__(self, id):
        self.id = id

    def __nonzero__(self):
        return self.id not in (None, 0)