python面试总结

1 with open(‘a.txt‘, ‘r‘) as f:
2     result1 = f.read(n)    # 表示读取n个字节到result1中
3     result2 = f.readline()    # 表示读取下一行到result2中
4     result3 = f.readlines()    # 表示读取整个文件到result3中

result = [i ** 2 for i in range(1, 11)]
print(result)

# 编写一个n的阶乘
def factorial(n):
    if n < 2:
        return 1
    return n * factorial(n-1)

if __name__ == "__main__":
    factorial(5)