df

numpyで2次元配列に行要素を追加していき、
最後にdataframeに変換

import pandas as pd
import numpy as np

data = [[1,2],[3,4]]
data = np.append(data,[6, 4]) 
        

arr = np.empty((0,2), int)
arr = np.append(arr, np.array([[1,2]]), axis=0)
arr = np.append(arr, np.array([[3,4]]), axis=0)
print(arr)


data_frame = pd.DataFrame(arr, columns=['resolt', 'value'])

data_frame

import pandas as pd

import numpy as np

data = [[1,2],[3,4]]

data = np.append(data,[6, 4])

arr = np.empty((0,2), int)

arr = np.append(arr, np.array([[1,2]]), axis=0)

arr = np.append(arr, np.array([[3,4]]), axis=0)

print(arr)

data_frame = pd.DataFrame(arr, columns=['resolt', 'value'])

data_frame