Table of Contents

Installation

Requiments

pipinstallPyPDF2python-docxpandasbeautifulsoup4

Usage

Creating and writing to a file

withopen("filename.txt","w")asf:f.write("Hello, World!")

Reading from a file

withopen("filename.txt","r")asf:print(f.read())

Appending to an existing file

withopen("filename.txt","a")asf:f.write("More text.")

Deleting a file

importosos.remove("filename.txt")

Checking if a file exists

importosos.path.exists("filename.txt")

Creating a directory

importosos.mkdir("directory_name")

Large File Handling

Opening a file

file=open('large_file.txt','r')

Reading a file line by line

withopen('large_file.txt','r')asfile:forlineinfile:print(line)

Reading a specific number of lines

fromitertoolsimportislicewithopen('large_file.txt','r')asfile:head=list(islice(file,5))

Searching within a large file

withopen('large_file.txt','r')asfile:forlineinfile:if'some_text'inline:print(line)

Writing to a large file

withopen('large_file.txt','w')asfile:file.write('some_text')

Splitting files

chunk_size=1000000# 1 MBwithopen('large_file.txt','r')asfile:chunk=file.read(chunk_size)whilechunk:withopen('chunk.txt','w')aschunk_file:chunk_file.write(chunk)chunk=file.read(chunk_size)

Handling Specific File Formats

Reading PDF files

importPyPDF2withopen('example.pdf','rb')asfile:reader=PyPDF2.PdfFileReader(file)page=reader.getPage(0)print(page.extract_text())

Reading Word documents

fromdocximportDocumentdoc=Document('example.docx')forparaindoc.paragraphs:print(para.text)

Reading Excel files

importpandasaspddata=pd.read_excel('example.xlsx')print(data)

Reading HTML files

frombs4importBeautifulSoupwithopen("example.html")asfp:soup=BeautifulSoup(fp,'html.parser')print(soup.prettify())

Credits

Usefull

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