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说明

windows注册表中有两支子健存储有所有程序的安装信息，因此我们可以通过访问注册表获取已安装软件信息

64位：HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall，如下图：
32位：HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall，如下图：

在这里插入图片描述

代码实现

下面代码使用python3实现

class SoftwareManager:def __init__(self):self.sub_keys = [r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall',r'SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall']self.__installed = self.__load_all_installed()def __get_value(self, each_key, name):try:value = winreg.QueryValueEx(each_key, name)[0]except Exception:value = Nonereturn valuedef __load_all_installed(self):installed = []for sub_key in self.sub_keys:with OpenKey(HKEY_LOCAL_MACHINE, sub_key) as sub_key_handle:for i in range(QueryInfoKey(sub_key_handle)[0]):try:each_key = OpenKey(HKEY_LOCAL_MACHINE, f'{sub_key}\\{EnumKey(sub_key_handle, i)}')except Exception as e:...else:DisplayName = self.__get_value(each_key, "DisplayName")if not DisplayName:print(DisplayName)continueinstalled.append({"DisplayName": DisplayName,"DisplayVersion": self.__get_value(each_key, "DisplayVersion"),"DisplayIcon": self.__get_value(each_key, "DisplayIcon"),"InstallDate": self.__get_value(each_key, "InstallDate"),"InstallLocation": self.__get_value(each_key, "InstallLocation"),"Publisher": self.__get_value(each_key, "Publisher"),})finally:each_key.Close()return installeddef get_all(self):"""获取所有安装列表:return:"""return self.__installeddef get_by_name(self, name):"""通过名字查找已安装软件:param name: :return: """one = [i for i in self.__installed if i.get('DisplayName') == name]return one[0] if one else Nonedef re_search(self, pattern, flags=0):"""通过正则搜索匹配项:param pattern: :param flags: :return: """return [i for i in self.__installed if re.search(pattern=pattern, string=i.get('DisplayName', ''), flags=flags)]

调用

通过名字获取已安装软件信息

manager = SoftwareManager()# 通过名字获取
wechat = manager.get_by_name("微信")
print(wechat['DisplayName'],  # 软件名wechat['DisplayVersion'],  # 软件版本wechat['InstallLocation'],  # 软件安装路径
)

使用正则匹配搜索


manager.re_search('微信') # 返回匹配列表

获取所有已安装软件

manager = SoftwareManager()
manager.get_all()  # 返回匹配列表

返回示例：

[{'DisplayName': 'ApiPost Agent 1.1.0', 'DisplayVersion': '1.1.0','DisplayIcon': 'C:\\Program Files\\ApiPost Agent\\ApiPost Agent.exe,0','InstallDate': None,'InstallLocation': None,'Publisher': None},{'DisplayName': 'Apifox 2.1.34', 'DisplayVersion': '2.1.34','DisplayIcon': 'C:\\Program Files\\Apifox\\uninstallerIcon.ico','InstallDate': None,'InstallLocation': None,'Publisher': 'Apifox Team'}
]