How to convert 2D list into dataframe-CodePudding

I have a python code that convert 2D list into pandas dataframe. Where the result is a dataframe with 2 records.

What i expect is to make all the data in one single row where each value is in a different column.

How can i make this happen ?

import pandas as pd
a = [[1,2],[3,5,6]]
print(type(a))

for b in a:
    for j in b:
        print(j)

dt=zip(a)
df=pd.DataFrame(dt,columns=["d"])
print(type(df))
print(df)

Result

CodePudding user response：

Probably isn't the most efficient way but the following code:

a = [[1,2],[3,5,6]]
one_d_list = [x for b in a for x in b]

df = pd.DataFrame(one_d_list, index= ['a', 'b', 'c', 'd', 'e'])
df.transpose()

will return the following dataframe:

   a  b  c  d  e
0  1  2  3  5  6

EDIT following question in comments:

b = [[1,2,3,4,5,1,4,7,8,9]]

b_1 = b[0][:5]
b_2 = b[0][5:]

pd.DataFrame([b_1, b_2], columns=['a', 'b', 'c', 'd', 'e'])

Returns:

   a  b  c  d  e
0  1  2  3  4  5
1  1  4  7  8  9