python读取文件的列数

以下是两种Python读取文件列数的例子：

1. 读取Excel文件的列数[^1]：

import csv

input_path = r"D:\\"
input_csv = csv.reader(open(input_path + "xxx.csv", 'r'))

row_num = ""
for row in input_csv:
    row_num = row

print(len(row_num))  # 输出列数

2. 读取txt文件的某一列数据[^2]：

list1 = []

try:
    file = open('test.txt', 'r')
except FileNotFoundError:
    print('File is not found')
else:
    lines = file.readlines()
    for line in lines:
        a = line.split()
        x = a  # 读取第5列数据
        list1.append(x)

file.close()

for x in list1:
    print(x)