how to get the weight quatity from list in python? : i'm new to python ,so i'm confuse to get the regex pattern to find the corresponding weight from the product.
this is my code.

    import re
    string1 = [' (Expiry Date: 30 May 2019) 4 x Organic Infant Goat Milk Follow-on Formula 3 400g',' (Expiry on 30 May 2019) 4 x Organic Infant Goat Milk Follow-on Formula 2 400g '," [ Bellamy's ] Bellamys Organic Step 3 Toddler Milk Drink 900g x 6 tins Made In Australia  CARTON DEAL EXPIRE 06/2019 to 2020",' [[1+1]] FRISO (2) 1.8kg+900g'," [[Carton Sales]] Bellamy's Organic Follow-On Formula Step 2 900g x 6tins",' Dumex Mamil Gold Stage 4 Growing Up Kid Milk Formula (850g) x 6',' Wyeth S-26 Promise Gold Stage 4 1.6kg X 6 Tins']

    m = [re.search('([0-9.]+[kgG]{1,2})', s).group(0) for s in string1] 
    print m
the output is like this

    ['400g', '400g', '900g', '1.8kg', '900g', '850g', '1.6kg']
but i need to get this output

    ['4x400g', '4x400g', '900gx6', '1.8kg+900g', '900gx6', '850gx6', '1.6kgX6']
is there any way to get this.