前言

httprunner用.env 文件管理环境变量，但是必须是严格是key=value格式，如果加# 注释就会用例解析失败。

问题描述

问题版本：v2.5.9
问题描述：
.env文件中带有#号注释

# 用户名
user = test1

运行用例的时候会报错：.env format error

主要原因是默认只能解析key=value格式的数据

解决办法

先看对应的源码，在httprunner.loader.load.py文件中找到

def load_dot_env_file(dot_env_path):
    """load .env file.

    Args:
        dot_env_path (str): .env file path

    Returns:
        dict: environment variables mapping

            {
                "UserName": "debugtalk",
                "Password": "123456",
                "PROJECT_KEY": "ABCDEFGH"
            }

    Raises:
        exceptions.FileFormatError: If .env file format is invalid.

    """
    if not os.path.isfile(dot_env_path):
        return {}

    logger.log_info("Loading environment variables from {}".format(dot_env_path))
    env_variables_mapping = {}

    with io.open(dot_env_path, "r", encoding="utf-8") as fp:
        for line in fp:
            # maxsplit=1
            if "=" in line:
                variable, value = line.split("=", 1)
            elif ":" in line:
                variable, value = line.split(":", 1)
            else:
                raise exceptions.FileFormatError(".env format error")

            env_variables_mapping[variable.strip()] = value.strip()

    utils.set_os_environ(env_variables_mapping)
    return env_variables_mapping

可以看到关键代码部分

if "=" in line:
    variable, value = line.split("=", 1)
elif ":" in line:
    variable, value = line.split(":", 1)

按每行读取后以等号"="或冒号":"分割。

只需加两行代码即可解决

def load_dot_env_file(dot_env_path):
    """load .env file.

    Args:
        dot_env_path (str): .env file path

    Returns:
        dict: environment variables mapping

            {
                "UserName": "debugtalk",
                "Password": "123456",
                "PROJECT_KEY": "ABCDEFGH"
            }

    Raises:
        exceptions.FileFormatError: If .env file format is invalid.

    """
    if not os.path.isfile(dot_env_path):
        return {}

    logger.log_info("Loading environment variables from {}".format(dot_env_path))
    env_variables_mapping = {}

    with io.open(dot_env_path, "r", encoding="utf-8") as fp:
        for line in fp:
            if line.startswith("#") or "=" not in line:
                # 忽略空行和# 注释行
                continue
            # maxsplit=1
            if "=" in line:
                variable, value = line.split("=", 1)
            elif ":" in line:
                variable, value = line.split(":", 1)
            else:
                raise exceptions.FileFormatError(".env format error")

            env_variables_mapping[variable.strip()] = value.strip()

    utils.set_os_environ(env_variables_mapping)
    return env_variables_mapping