import json

#time format MM-DD-YYYY


class jsonARMGen:
    def __init__(self):
        self.start_date = '01-01-2021'
        self.end_date = '02-02-2021'
        self.report_name = 'FailedLogins'
        self.additional_parameter = ''
        self.additional_value = ''
        self.additional_string = f',"{additionalParameter}":"{additional_value}"'
        self.rep_format = f'{{"StartDate":"{start_date}","EndDate":"{end_date}:,"Report":"{report_name}"}}'
        if additional_parameter != '' and additional_value != '':
            self.rep_format = f'{{"StartDate":"{start_date}","EndDate":"{end_date}:,"Report":"{report_name}"{additional_string}}}'

            
a = jsonARMGen
print(a.rep_format)