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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def interpret_expenditure_entry(entry):
 """Interpret data fields within a CO-TRACER expediture report. Interpret the expenditure amount, expenditure date, filed date, amended, and amendment fields of the provided entry. All dates (expenditure and filed) are interpreted together and, if any fails, all will retain their original value. Likewise, amended and amendment are interpreted together and if one is malformed, both will retain their original value. Entry may be edited in place and side-effects are possible in coupled code. However, client code should use the return value to guard against future changes. A value with the key 'AmountsInterpreted' will be set to True or False in the returned entry if floating point values are successfully interpreted (ExpenditureAmount) or not respectively. A value with the key 'DatesInterpreted' will be set to True or False in the returned entry if ISO 8601 strings are successfully interpreted (ExpenditureDate and FiledDate) or not respectively. A value with the key 'BooleanFieldsInterpreted' will be set to True or False in the returned entry if boolean strings are successfully interpreted (Amended and Amendment) or not respectively. @param entry: The expenditure report data to manipulate / interpret. @type entry: dict @return: The entry passed @raise ValueError: Raised if any expected field cannot be found in entry. """

    try:
        expenditure_amount = float(entry['ExpenditureAmount'])
        entry['AmountsInterpreted'] = True
        entry['ExpenditureAmount'] = expenditure_amount
    except ValueError:
        entry['AmountsInterpreted'] = False

    try:
        expenditure_date = parse_iso_str(entry['ExpenditureDate'])
        filed_date = parse_iso_str(entry['FiledDate'])
        entry['DatesInterpreted'] = True
        entry['ExpenditureDate'] = expenditure_date
        entry['FiledDate'] = filed_date
    except ValueError:
        entry['DatesInterpreted'] = False

    try:
        amended = parse_yes_no_str(entry['Amended'])
        amendment = parse_yes_no_str(entry['Amendment'])
        entry['BooleanFieldsInterpreted'] = True
        entry['Amended'] = amended
        entry['Amendment'] = amendment
    except ValueError:
        entry['BooleanFieldsInterpreted'] = False

    return entry