正常情况下,获取图片的requests.status_code应该是200, 如果requests.status_code不等于200,那就说明已经下载完了。 #第一种可能性,是jpg格式 if 'mobile/index.html' in bookurl: for yema in range(1,2000): filename1 = str(yema) + '.jpg' bookurl2 = bookurl.replace('mobile/index.html', 'file...
• book1.pdf(扫描版) • 外国电影史(扫描版) 这5个文件的首页截图如下: 判别方法1 判别方法1为使用PDF解析工具fitz模块,统计PDF文档中文本区域占总的PDF页面区域的比例,如果比例小于某个阈值,则判别为扫描版PDF。这里我们设置文本区域面积占PDF页面区域的占比阈值为0.05,如果小于这个值,则判别该PDF文档为扫描...
Accessing Python source code and bytecode Mixins Attribute Access ArcPy Abstract Base Classes (abc) Plugin and Extension Classes Immutable datatypes(int, float, str, tuple and frozensets) Incompatibilities moving from Python 2 to Python 3 2to3 tool Non-official Python implementations Abstract syntax...
Cloud-Native-Python-Build-and-deploy-resilent-applications-on-the-cloud-using-microservices-AWS-Azure-and-more.pdf code-accompanying-Daniel-Arbuckle-s-Mastering-Python.zip Coding-Projects-in-Python.pdf Coding_Club_Level_1_Python_Basics_(CUP_2012)_by_Roffey_C.pdf Coding_the_Matrix__Linear_Algeb...
f= codecs.open(filename,'rb') file_rd=PdfFileReader(f) short_filename=os.path.basename(os.path.splitext(filename)[0])iffile_rd.isEncrypted ==True:print('不支持的加密文件:%s'%(filename))continuemerger.append(file_rd, bookmark=short_filename, ...
pip install pypdf2 2.4 PyPDF的官方文档:https://pythonhosted.org/PyPDF2/ 三:PyPDF 的使用目的 首先 我这里有一个加密的PDF文件: 那么我使用上一篇文章的代码(如下): + View Code 解析的时候,会主动触发异常(如下): 那么,打开文件,我们会发现,实际情况是这样的: ...
Learning to code may take a while, but becoming good at it ensures that you should be set up with a solid job for the rest of your life. One of the most essential choices to make is picking the coding language. Python is among the best options, particularly if you have a MacBook. ...
except_suite#exception-handlingcode异常处理代码 try: ...f=open(blah,r) ...exceptIOError,e: ...printcouldnotopenfile:,e ... couldnotopenfile:[Errno2]Nosuchfileordirectory 10.3.2封装内建函数 float(12345) 12345.0 10.3.3带有多个except的try语句 10.3.4处理多个异常的except语句 10.3.5捕获所有异...
《Python Cookbook》第三版中文.pdf 中级 《Python Cookbook》第三版中文 《Python Cookbook(第3版)中文版》介绍了Python应用在各个领域中的一些使用技巧和方法,其主题涵盖了数据结构和算法,字符串和文本,数字、日期和时间,迭代器和生成器,文件和I/O,数据编码与处理,函数,类与对象,元编程,模块和包,网络和Web编程...
Chapter 4. Code Reuse: Functions and Modules Reusing code is key to building a maintainable system. And when it comes to reusing code in Python, it all starts and ends … - Selection from Head First Python, 2nd Edition [Book]