Solution for file manip exercice

source/Input_Output.rst

@@ -188,3 +188,23 @@ For instance which is a very convenient way to use it::
    for seq in fasta_iter('my_fast_file.fasta'):
       print seq
 
+
+Exercise
+--------
+
+Before performing any modification on files or folders, it is good practice to print and check the names of the affected items.
+
+:download:`file_manip.zip <_static/data/file_manip.zip>`
+
+#. Unzip the folder
+#. Create a script to:
+    * Append today’s date to all files whose names contain "sample".
+    * Create a folder named "log".
+    * Move all files ending with ".log.txt" into the "log" folder.
+    * Delete all empty folders in the directory.
+
+.. literalinclude:: _static/code/file_manip.py
+   :linenos:
+   :language: python
+
+:download:`fasta_reader.py <_static/code/file_manip.py>` .