Expand pandas DataFrame column into multiple rows

Question

If I have a DataFrame such that:

pd.DataFrame( {\"name\" : \"John\", 
               \"days\" : [[1, 3, 5, 7]]
              })

<

Answer 1

Probably somehow like this:

df2 = pd.DataFrame(columns = df.columns)
for i,r in df.iterrows():
    for e in r.days:
        new_r = r.copy()
        new_r.days = e
        df2 = df2.append(new_r)
df2