python读取txt二维数组，做转置后二维数组输出到txt

import numpy as np

def read_checkpoints():
    checkpoints_from_file = []
    with open("new2.txt", "r") as f:
        lines = f.readlines()
        for line in lines:
            line = line.replace("n", "")
            checkpoints_from_file.append(line.split("t"))
        #print(checkpoints_from_file)

    checkpoints_from_file = np.array(checkpoints_from_file).transpose()
	
    print(len(checkpoints_from_file))
    print(len(checkpoints_from_file[0]))
    print(checkpoints_from_file[0])
    print(checkpoints_from_file[1])
    print(checkpoints_from_file[41])
    
    return checkpoints_from_file

def Writedata(data):
    filename = 'specSamps_selectedArea.txt'  #数据文件保存位置
    row = np.array(data).shape[0]   #获取行数n
    col = np.array(data).shape[1]   #获取行数n
    with open(filename,'w') as f: # 若filename不存在会自动创建，写之前会清空文件

        for rowIdx in range(0,row):
            jointsFrame = data[rowIdx] #每行
            jointText = ' '.join(jointsFrame)
			
            f.write(jointText)
			
            #for colIdx in range(0,col):
            #    strNum = str(jointsFrame[colIdx])
            #    f.write(strNum)
            f.write('n')
        f.close()
 
if __name__ == '__main__':
    np.set_printoptions(threshold=np.inf)
    data = read_checkpoints()
    Writedata(data)