basic_python_files4.py

## If file is not created then we can also create it like that.
## It will automatically generate new file in the current directory.
with open('file2.txt','w') as f1:
    pass
  
#If we will go to our file then it will be empty right now.  

## Writing to the created file.
with open('file2.txt','w') as f1:
    f1.write("Hello")
    
#If we will go to the file2.txt then it will write Hello in that file.
    
## Again writing then it is remove the previous contents. So in order to avoid the removal of previous content.
## One can use the append mode, it will append the data in already existing file.
with open('file2.txt','w') as f1:
    f1.write("Test1")
    
#If we will go to the file2.txt now then it will write Test1 and remove the previous written content i.e, Hello. 

## Appending in files
## using append('a') mode, it will write to existing file without removing previous content.
with open('file2.txt','a') as f1:
    f1.write("Test2")