laike9m laike9m

## raw string
http://wiki.c2.com/?RawStrings
Raw string 是个通用概念。即 escape 不生效的 string，既然不生效，也无法 escape 掉 ending sequence。
所有语言的 raw string 都面临一个问题，即如何处理 ending sequence

Python
https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals
staring sequence: “ or '
ending sequence: “ or '
Python 的做法是允许 ‘, “ 出现，但需要用 \ escape 掉它们（相当于在 Python raw string里有唯一生效的escape就是\”和\’），并且 \ 依然会出现

## dot
digraph "Cyberbrain Output" {
	graph [forcelabels=true];
	node [label="\N"];
	subgraph "cluster_(0, 0, 0)" {
		graph [color=lightgrey,
			label="(0, 0, 0)",
			overlap=scale,
			style=filled
		];
		node [color=white,

## extended_arg.py
# Tests how EXTENDED_ARG works

import bytecode
import dis
import sys
from bytecode import ConcreteInstr, ConcreteBytecode

CONST_ARG = 0x1234567  # The real argument we want to set.
cbc = bytecode.ConcreteBytecode()
cbc.consts = [None] * (CONST_ARG + 1)  # Make sure co_consts is big enough.

## manually_maintain_stack.py
import dis
import sys


def g(x, y):
    # Code that analyzes outer frame to get passed in arguments.
    outer_frame = sys._getframe(1)
    instructions = list(dis.get_instructions(outer_frame.f_code))

    call_start_offset = None

## test.py
def xxxx(ph, sin_id):

  with OracleConnect(xxxx) as db_oracle:
    sql = u"xxxxx"
    has_data, sql_data = db_oracle.get_one(sql)

    if has_data:
      return sql_data.get("task_id", ""), "rollback"
    else:
      return sin_id, "calculate"

## freeze_bug.py
# test.py
with freeze_time(datetime.datetime(2016, 2, 10, tzinfo=pytz.timezone('US/Pacific'))):
  from mymodule import date_manager

# mymodule.py
class _DateManager(object):

  def __init__(self):
    self._today = datetime.datetime.now(pytz.timezone('US/Pacific'))


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## pool_connections&pool_maxsize.py
import requests
from requests.adapters import HTTPAdapter
from threading import Thread
import logging

logging.basicConfig(filename='out.txt', level=logging.DEBUG, filemode='w')
requests_log = logging.getLogger("requests.packages.urllib3")
requests_log.setLevel(logging.DEBUG)
requests_log.propagate = True

## django_cache_for_views.py
#!/usr/bin/env python
# coding: utf-8

from asset.models import *
from common.models import *
from cost.models import *
from django.core.cache import cache
import inspect
from django.contrib.contenttypes.models import ContentType
from django.db.models.signals import pre_save, pre_delete