title: Pandas: convert days to months
body: <p>I have dataframe</p>
  
  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  </code></pre>
  
  <p>There are all infornation to every day. I need to get all information to every month. And if now some day in month != 0, print to month 1. I need to get table like this, but name of columns are months and values can be 0 or 1</p>