Add lines 109-118(reading files) (#27795)

* Add lines 109-118(reading files)

* Update index.md

guide/english/python/files-and-io/index.md

@@ -110,6 +110,16 @@ Sample code to open a text file using the `with` statement:
 with open('hello_world.txt', 'w') as f:
     f.write('Hello World!')
 ```
+#### Reading files
+There are many ways of reading a file. Reading a file <code>fh</code> is only possible if file is opened in read mode, the following are the options:
+
+<code>fh.read()</code>: read file as a single string
+
+<code>fh.read(n)</code>: read n number of characters
+
+<code>fh.readline()</code>: read one line and end with <code>\n</code>
+
+<code>fh.readlines()</code>: read file as a list of strings and end with <code>'\n'</code>
 
 #### More Information:
 [Python Documentation - IO](https://docs.python.org/2/tutorial/inputoutput.html)