06 函数返回值

6、函数返回值 P93

def func(arg):
    # ....
    return 9 # 返回值为9 默认：return None

val = func('adsfadsf')

# 1. 让用户输入一段字符串，计算字符串中有多少A字符的个数。有多少个就在文件a.txt中写多少个“李邵奇”。

def get_char_count(data):
    sum_counter = 0
    for i in data:
        if i == 'A':
            sum_counter += 1
            
	return sum_counter

def write_file(line):
    if len(line) == 0:
        return False  # 函数执行过程中，一旦遇到return，则停止函数的执行。
    with open('a.txt',mode='w',encoding='utf-8') as f:
        f.write(line)
	return True 


content = input('请输入:')
counter = get_char_count(content)
write_data = "李邵奇" * counter 
status = write_file(write_data)
if status:
    print('写入成功')
else:
    print('写入失败')