import cdsapi
def try_download(): 
    
    c = cdsapi.Client()#timeout=200, quiet=False, debug=True)
    c.retrieve(
        'reanalysis-era5-pressure-levels',
        {
            'product_type': 'reanalysis',
            'format': 'grib',
            'day': [
                "11","12",
            ],
            'month': [
                "07","08",
             ],
            'year': [
                "2011",
             ],
            
            'pressure_level': [
                '300', '350', '400', '450', '500', '550', '600', '650', 
                '700', '750', '775', '800', '825', '850', '875', '900',
                '925', '950',  '975', '1000',
            ],
            'time': [
                "00:00",
                "05:00",
            ],
            'variable': 'u_component_of_wind',
            'area':[
                85, -60, 30, 40,
            ],
        },
        "try.grib")