原生请求头字符串

raw_headers = """Host: open.tool.hexun.com
Pragma: no-cache
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36
Accept: */*
Referer: http://stock.hexun.com/gsxw/
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8"""

将字符串转为字典

split(sep=None, maxsplit=None)

headers = dict([line.split(": ",1) for line in raw_headers.split("\n")])

输出测试

print(headers)
"""
{
    'Accept-Language': ' zh-CN,zh;q=0.9,en;q=0.8', 
    'Accept-Encoding': ' gzip, deflate', 
    'Accept': ' */*', 
    'User-Agent': ' Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36', 
    'Host': ' open.tool.hexun.com', 
    'Referer': ' http://stock.hexun.com/gsxw/', 
    'Pragma': ' no-cache', 
    'Cache-Control': ' no-cache'
}

"""