Define a class containing methods for reading a file and then store lines in external variable

Question

I want to build a class that perform various functions to the content(or lines) of any given file. I want to first include the opening and reading file function into that class, then add other methods.

Here is what I wrote for opening file and reading the lines:

class FileOpration:
 def __init__(self,name):
 self.name = name
 self.filename = self.name
 def readAllline(self):
 open(self.name).readlines()

file1 = FileOpration("myfile.txt")
print file1.filename
allines = file1.readAllline()
print allines

I define self.name variable because I want to store the specific file that I read. This works fine by the test code of print file1.filename. I saw "myfile.txt" on the terminal output.

However, the readAllline() method dose not work. The code only give me "None" as the output on terminal

Answer 1

You probably want to return that value:

def readAllline(self):
 return open(self.name).readlines()

Then it'll do what you expect. But why wrap this up in a class? Why not simply call the underlying functions directly?