创建临时文件存放证书之类

参考文章：https://www.jianshu.com/writer#/notebooks/26334576/notes/29530698

def write_cert():
    TEMP = tempfile.mkdtemp(suffix='_py', prefix='learn_python_')  # 每次都会新建一个临时文件夹，也可以用mkstemp创建临时文件
    fpath = os.path.join(TEMP, 'local.liaoxuefeng.com.pem')
    # fpath = "/var/folders/6j/2yp3ybgd227cf8m7b0swgl2w0000gn/T/learn_python_59dp48tf_py/local.liaoxuefeng.com.pem"
    with open(fpath, 'w', encoding='utf-8') as f:
        f.write(CERT_DATA)
    return fpath

CERT_DATA = "xxxxxx"