在Pandas Dataframe中要行的列表列表

Question

I have a list of lists:

list = ['John', ['Jack', 'Michael', 'Ian'], ['Melissa', 'Hannah']]

Which I want to transform into a row of an existing Dataframe:

Name         Children              Siblings
John     Jack, Michael, Ian     Melissa, Hannah

Does anyone have an idea on how to accomplish this?

I'm new to Pandas and I have only found ways of converting lists into columns into a new dataframe for example:

df = pd.DataFrame(letters).T
df.columns = [0, 1, 2]

print (df)
   0  1  2
0  a  b  c 

Answer 1

Just wrap it in brackets:

arr = ['John', ['Jack', 'Michael', 'Ian'], ['Melissa', 'Hannah']]
df = pd.DataFrame([arr], columns=['Name', 'Children', 'Siblings'])

   Name              Children           Siblings
0  John  [Jack, Michael, Ian]  [Melissa, Hannah]

Since you mentioned you are appending to an existing dataframe:

df

   Name              Children           Sublings
0  John  [Jack, Michael, Ian]  [Melissa, Hannah]

df.append(pd.DataFrame([arr], columns=df.columns)).reset_index(drop=True)

   Name              Children           Siblings
0  John  [Jack, Michael, Ian]  [Melissa, Hannah]
1  John  [Jack, Michael, Ian]  [Melissa, Hannah]