title: Convert string structure in another
body: <p>I have a file with this pattern :</p>
  
  <pre><code>[account.invoice.set_num]
  job_size = 0
  trans_size = 100
  
  [commission.invoice_second.create_full]
  j_size = 0
  
  [commission.invoice_principal.finalize]
  j_size = 12
  in_directory = /to/the/directory
  </code></pre>
  
  <p>I want to transform this pattern to a text like :</p>
  
  <pre><code>ACCOUNT_INVOICE_SET_NUM_JOB_SIZE = 0
  ACCOUNT_INVOICE_SET_NUM_TRANS_SIZE = 100
  COMMISSION_INVOICE_SECOND_CREATE_FULL_J_SIZE=0
  COMMISSION_INVOICE_PRINCIPALE_FINALIZE_J_SIZE=12 
  COMMISSION_INVOICE_PRINCIPALE_FINALIZE_IN_DIRECTORY=/to/the/directory
  </code></pre>
  
  <p>I try to do that in Bash unix or in Python.
  I don't konw what is the best/easiest way to do that.</p>