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; fromCollectionsImportCounter>>> Counter (a[1]) Counter ({')': 6186,'@': 6157,'(': 6154,']': 6152,'#': 6115,'_': 6112,'[': 6108,'}': 6105,'%': 6104,'!': 6080,'+': 6066,'$': 6046,'{': 6046,'': 6043,'*': 6034,'^': 6030,'\ n': 1221,'-': 4,'a': 1,'T': 1,'I': 1,'L': 1,'': 1,'y': 1,'>': 1,'u': 1,'e': 1,'Q': 1})It's kind of interesting.Because the HTML is too large, I open it directly with Urlopen () and then take the regular expression out of that part (of course, in order to show the superiority of

Http://kodango.com/useful-documents-about-shell$$ the shell itself PID (ProcessID)$! PID of the Shell's last running background process$? The return value of the last command that was run to check whether the previous command executed successfully.$* all parameter lists, as a whole.[email protected] all parameter lists. Alone as a whole.$# the number of arguments added to the shell.The file name of the Shell itself."Shell Learning Notes" $#,[email protected], explaining the meaning of $

Anonymous functions:calc=Lambda x:x*3print(Calc (3)) # return 9Higher order functions: You can pass a function name as an argument to another function The return value can contain a function name Adorner :Essentially a function that adds additional functionality to other functions Cannot modify the source code of the decorated function Cannot modify the method of invocation of a decorated regret Simple Adorner example-run time for statistical functions:Im

There are three different parameters to the function: General parameters Default parameters Dynamic parameters# ######### define function ########## name is called the formal parameter of function func, abbreviation: Parameterdef func (name):Print (name)# ######### Execute function ########## ' Fuyuteng ' is called the actual argument of function func, abbreviation: argumentFunc (' Fuyuteng ') def func (name, age = 18print (" %s:%s (name,age)) # specify parameter func ( ' fuyuteng ", 19)

-rhel6 Uninstalling selinux is said to be a bug in selinux iN OS. Then generate the key pair. L configure the java environment and jdk 1. First, you must use the following command to download the rpm package. There are also many introductions on the Internet, because of the problem with the oracle.com website. Wget -- no-cookies -- no-check-certificate -- header "Cookie: gpw_e24 = http % 3A % 2F % 2Fwww.oracle.com" http://download.oracle.com/otn-pub

generated in slave1. The final solution is: Http://eosrei.net/articles/2012/01/fixing-open-idrsa-failed-permission-denied-rhel6 Uninstalling selinux is said to be a bug in selinux iN OS. Then generate the key pair. L configure the java environment and jdk 1. First, you must use the following command to download the rpm package. There are also many introductions on the Internet, because of the problem with the oracle.com website. Wget -- no-cooki

The distributed architecture is a centralized design.Master control machines connected to multiple processing nodesTherefore, it is critical to ensure the high availability of the master machine. Distributed locks are a good solution to this problem.Zookeeper is a Distributed Lock Management System for Highly Reliable metadata maintenance.. I. Application 1. Cluster Mode In cluster mode, multiple zookeeper nodes are configured to start the zookeeper cluster. zookeeper will vote for a no

return in the generator function will trigger a stopiteration exceptionFunction:Zip (iter1[, iter2[, ...]) returns a Zip object that is used to generate tuples, and the number of tuples is determined by the smallest iteration objectEnumerate (iterable[, start]) generates an indexed enumeration object, returning an iterative type of index-value pair (Index-value pair), the default index is zero-based, or it can be specified with start (Sort custom labels)byte strings and byte arraysByte string b

Then the previous article "Yaf 0 Basic Learning Summary 1-YAF Framework Introduction" We have a general understanding of the YAF framework, but for programmers, those words are superficial, the most they want is to start tapping the code. Of course this is the most effective way to learn the YAF framework, the more you knock, the faster you will learn, the same for any language, and we have to install the YAF framework before writing the code.Compared

implement interaction between services and desktop users in Windows 7 and Vista. References1. WTSSendMessage FunctionThe http://msdn.microsoft.com/en-us/library/aa383842 (VS.85). aspx 2. CreateProcessAsUser FunctionHttp://msdn.microsoft.com/en-us/library/ms682429 (v = VS.85). aspx 3. WTSSendMessage (wtsapi32)Http://www.pinvoke.net/default.aspx/wtsapi32/WTSSendMessage.html 4. WTSQueryUserToken FunctionThe http://msdn.microsoft.com/en-us/library/aa38

-Session communication methods, and implement interaction between services and desktop users in Windows 7 and Vista. References 1. WTSSendMessage FunctionThe http://msdn.microsoft.com/en-us/library/aa383842 (VS.85). aspx 2. CreateProcessAsUser FunctionHttp://msdn.microsoft.com/en-us/library/ms682429 (v = VS.85). aspx 3. WTSSendMessage (wtsapi32)Http://www.pinvoke.net/default.aspx/wtsapi32/WTSSendMessage.html 4. WTSQueryUserToken FunctionThe http://ms

Lucas theorem: N is written in P-ary A[n]a[n-1]a[n-2]...a[0], and M is written in P-b[n]b[n-1]b[n-2]...b[0], then C (n,m) and C (A[n],b[n]) *c (a[n-1],b[n-1]) *c ( A[n-2],b[-2]) *....*c (a[0