How to Access Variables from Another File

How to access a variable from another dart file . Flutter

Create a constructor onDateSelected so you can get a datetime when you select a date from date-picker.

class DateOfBirth extends StatefulWidget {
  final Function onDateSelected;

  DateOfBirth({this.onDateSelected});

  @override
  _DateOfBirthState createState() => _DateOfBirthState();
}

class _DateOfBirthState extends State<DateOfBirth> {
  DateTime? dateTime;
  String _text = '';

  @override
  Widget build(BuildContext context) {
    return Container(
      decoration: BoxDecoration(
          border: Border.all(), borderRadius: BorderRadius.circular(5)),
      width: double.infinity,
      child: Padding(
        padding: const EdgeInsets.only(left: 8, right: 8),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            const Text('Date Of Birth'),
            Text(_text),
            ElevatedButton(
              onPressed: () async {
                dateTime = await showDatePicker(
                  context: context,
                  initialDate: dateTime ?? DateTime.now(),
                  firstDate: DateTime(1900),
                  lastDate: DateTime.now(),
                );
                widget.onDateSelected(dateTime);
                setState(() {
                  _text =
                      '${dateTime?.day}/${dateTime?.month}/${dateTime?.year}';
                });
              },
              child: const Text('Date Of Birth'),
            ),
          ],
        ),
      ),
    );
  }
}

// You can get date like this.

DateOfBirth(
      onDateSelected: (date) {
        //
      },
    )

Python: Dynamically access variable from another file

You can use getattr() for this:

main_file.py

import config as cf

new_var = 'var' + str(1)
print(getattr(cf, new_var))

The attribute is here the variable of the imported module.

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