calculate distance between latitude longitude columns for pandas data frame

I am trying to apply this code:

import h3

coords_1 = (52.2296756, 21.0122287)
coords_2 = (52.406374, 16.9251681)
distance = h3.point_dist(coords_1, coords_2, unit='km')
distance

to a pandas dataframe. This is my not working attempt.

data = {'lat1':[52.2296756],
        'long1':[21.0122287],
        'lat2':[52.406374],
        'long2':[16.9251681],      
}
df = pd.DataFrame(data)
df

df['distance'] = = h3.point_dist((df['lat1'], df['long1']), (df['lat2'], df['long2']), unit='km')

Any help would be very much appreciated. Thanks!

>Solution :

It’s working you need to just delete the second "="

data = {'lat1':[52.2296756],
        'long1':[21.0122287],
        'lat2':[52.406374],
        'long2':[16.9251681],      
}
df = pd.DataFrame(data)
df

df['distance'] =  h3.point_dist((df['lat1'], df['long1']), (df['lat2'], df['long2']), unit='km')