Python Classroom Series – 29/Sept/2020

More about files

• Common file Operations:
  • file_write = open(r’C:\temp\test.txt’, ‘w’) => Create a file for writing
  • file_object = open(‘data.txt’,’r’) => Create a file for reading
  • file_object.read() => read entire file into a string
  • file_object.read(N) => Read upto next N Character (or bytes) into a string
  • file_object.readline() => Read the nextline
  • file_object.readlines() => Read all the lines into a list of strings
  • file_write.write(<string>)
  • file_write.writelines(<list>)
  • file_write.close()
• Write a binary file with write()
  • Refer Here for the sample
• Files in Text Mode
  • Dealing with strings
• Files in Binary Mode
  • Dealing with bytes
• Store Python Objects into files
  • Writing Python Objects by formatting a text file is a possible option Refer Here
  • Storing Native Python Objects: pickle
    • The pickle module performs what is known as object serialization
    • The process of writing the objects to file (serialization) is referred as pickle or pickling and the process of reading objects into memory from file (deserialization) is referred as unpickling
  • Applying Pickle to samples and also to lt_restaurant is over here

Next Steps:

1. Understanding JSON
2. Understanding YAML
3. Using JSON to store & retrieve the data in python
4. Using YAML to store & retrieve the data in python