软件测试|一文教你学会Python文件 I/O 操作

f = open('test.txt', 'w')

# 写入文件
def fun_1():
    f = open('hello.txt','w')

    f.write('Hello World')

    f.write('Good Morning')

    f.close()

# 写入换行
def fun_2():
    f = open('hello2.txt', 'w')

    f.write('Hello World\n')

    f.write('Good Morning\n')

    f.close()

# 写入列表
def fun_3():
    f = open('hello3.txt', 'w')

    text_lines = ['Hello World\n','Good Morning\n']

    f.writelines(text_lines)

    f.close()

# 追加文件
def fun_4():
    f = open('hello2.txt','a')

    f.write('The end\n')

    f.close()



if __name__ == "__main__":
    print("hello python~")
    fun_1()
    fun_2()
    fun_3()
    fun_4()

# 读取文件 read
def fun_5():
    f = open('hello2.txt', 'r')

    text = f.read()

    print('text:\n',text)

# 读取文件 readlines
def fun_6():
    f = open('hello2.txt','r')

    print(f.readlines())

# with与open
def fun_7():
    with open('hello7.txt','w') as f:
        f.write('Hello world\n')
        f.write('Good Morning\n')
if __name__ == "__main__":
	fun_5()
    fun_6()
    fun_7()
-----------------------------
输出结果如下:
text:
 Hello World
Good Morning
The end

f = open(yaml_file, 'r')
data = yaml.load(f.read())
f.close

{
    'name':'muller',
    'age':34,
    'xinqing':['haha','heihei']
}