PandoraTemplate.py

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import re
 
class PandoraTemplate:
    def date(self, filename):
        """Sets date column given the filename (it contains the date)
           For example gyrostream-pty-ltd_pandora_FAM_COMBINED_202203_Monthly-Sales.csv
        Args:
            filename (str): current filename
        Returns: date_str (str)
        """
        # "gyrostream-pty-ltd_pandora_FAM_COMBINED_202203_Monthly-Sales.csv"
        date = re.findall(r'_\d{6}_', filename)[0]
        date = date.replace("_", "")
        date_str = date[:4]+"-"+date[4:]+"-01"
        # df["date_from_file"] = date_str
        return date_str