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...
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...
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]
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...
若要使转换显示为[External Code]而不指定转换方向,则请工具>选项>调试>常规>启用仅我的代码选项。 若要使任一调用帧处于活动状态,请双击该帧。 此操作还会打开相应的源代码(如果可能)。 如果源代码不可用,该帧仍将处于活动状态并可检查局部变量。
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, ...
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. ...
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: ...
• 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...
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...