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Commitbd28590

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Add file read write demo (I/O)
1 parent4de37b9 commitbd28590

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‎FilesIO/.project

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>FilesIO</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.python.pydev.PyDevBuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.python.pydev.pythonNature</nature>
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</natures>
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</projectDescription>

‎FilesIO/.pydevproject

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<?eclipse-pydev version="1.0"?><pydev_project>
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<pydev_propertyname="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
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<pydev_propertyname="org.python.pydev.PYTHON_PROJECT_VERSION">python 3.6</pydev_property>
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<pydev_pathpropertyname="org.python.pydev.PROJECT_SOURCE_PATH">
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<path>/${PROJECT_DIR_NAME}/src</path>
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</pydev_pathproperty>
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</pydev_project>

‎FilesIO/src/ants.jpg

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‎FilesIO/src/filesio.py

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'''
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Created on Aug 8, 2017
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@author: Aditya
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This program demonstrates the python IO capabilities.
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File reading and writing for text and binary files are demonstrated.
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'''
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defreadfiledemo():
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f=open('smallfile.txt')
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forlineinf:
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print(line,end='')
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defreadwritefiledemo():
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fin=open('smallfile.txt','r')
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fout=open('demofile1.txt','w')
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forlineinfin:
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print(line,file=fout,end='')
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defbigfiledemo():
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fin=open('largefile.txt','r')
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fout=open('demofile2.txt','w')# open demofile to wite
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buffersize=50000# buffer size in bytes
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buffer=fin.read(buffersize)
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print('Read method on file handle object is not iterable. Therefore, using while-loop and not for-loop.')
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whilelen(buffer):
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fout.write(buffer)
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print('.',end='')
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buffer=fin.read(buffersize)
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print('\nDone writing the big file.')
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defreadwritebinaryfilesdemo():
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fin=open('ants.jpg','rb')# read binary
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fout=open('demo.jpg','wb')# write binary
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buffersize=50000# buffer in bytes
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buffer=fin.read(buffersize)
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print('Note: Image read in binary format.')
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print(buffer)
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whilelen(buffer):
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fout.write(buffer)
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print('.',end='')
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buffer=fin.read(buffersize)
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print('\nDone writing the image.')
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defmain():
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#writebigfile()
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readwritebinaryfilesdemo()
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readfiledemo()
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readwritefiledemo()
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bigfiledemo()
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defwritebigfile():
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f=open('largefile.txt','w')
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foriinrange(10000):
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print('{:05} Yo the big file of the Files'.format(i),file=f)
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print('Done writing.')
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if__name__=='__main__':main()

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