ID_NULL built in function is used to determine that an object type variable is null or not null in Oracle Forms and returns a BOOLEAN value that indicates whether the object ID is available or not means it is null or not null. Below is the Syntax of…
前两天被问到常用的python lib和module有哪些?最常用的那几个,其他的一下子竟然回答不上.想想也是,一般情况下,遇到一个问题,在网上一搜,顺着线索找到可用的例子,然后基本没有怎么深究.结果就导致了现在没有网络基本写不出代码的状况,搜索是程序员必须的技能,但是只依靠搜索例子是无法成长的. 今天抽出1个小时时间把一些重要的module的简要整理出来,逐步一个个熟悉. 0. Date Structures and Algorithms abc The abc module defines…
Keras tutorial - the Happy House Welcome to the first assignment of week 2. In this assignment, you will: Learn to use Keras, a high-level neural networks API (programming framework), written in Python and capable of running on top of several lower-l…
Python programs are executed by an interpreter. When you use Python interactively, the special variable _ holds the result of the last operation. Python is a dynamically typed language where variable names are bound to different values, possibly of v…
import re r1 = re.compile(r'(?im)(?P<name></html>)$') content = """ <HTML> boxsuch as 'box' and 'boxes', but not 'inbox'. In other words box <html>dsafdsafdas </html> </ahtml> </html> </HTML>…
1. get files in the current directory with the assum that the directory is like this: a .py |----dataFolder |----Myfolder |----1.csv , 2.csv, 3.csv # a.py 1 def getFileList(): file_list = [] cur_dir = os.getcwd() for folder in os.walk(cur_dir).next()…
Byte Tank Posts Archive Deep Reinforcement Learning: Playing a Racing Game OCT 6TH, 2016 Agent playing Out Run, session 201609171218_175epsNo time limit, no traffic, 2X time lapse Above is the built deep Q-network (DQN) agent playing Out Run, trained…
Creating a URL stream using a Twitter filter Start by creating the project directory and standard Maven folder structure (http://maven.apache.org/guides/introduction/introduction-to-the-standard- directory-layout.html). 1. Create the POM as per the C…
Identity Column in SQL Server If a column is marked as an identity column, then the values for this column are automatically generated, when you insert a new row into the table. The following, create table statement marks PersonId as an identity colu…
Python Object Graphs - objgraph 1.7.2 documentation Python Object Graphs¶ objgraph is a module that lets you visually explore Python object graphs. You'll need graphviz if you want to draw the pretty graphs. I recommend xdot for interactive use. pip…
