python快速进阶7-如何查找windows系统中所有程序的安装信息

如题，答案是：通过注册表查找。

windows系统中有两支子健存储有所有程序的安装信息：

1，HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Compatibility Assistant\Store

以下是查找360浏览器安装路径的python代码示例：

import win32con, win32api

def find_360se_path():    
    upper_keyword = '360SE.EXE'    
    path = None    
    sub_key = r'Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Compatibility Assistant\Store'    
    key = win32api.RegOpenKey(win32con.HKEY_CURRENT_USER, sub_key, 0, win32con.KEY_READ)    
    info = win32api.RegQueryInfoKey(key)    
    for i in range(0, info[1]):        
        value = win32api.RegEnumValue(key, i)        
        if value[0].upper().endswith(upper_keyword):
            path = value[0]            
            break    
    win32api.RegCloseKey(key)    
    return path

2，HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths

以下是查找360浏览器安装路径的python代码示例：

import win32con, win32apidef 

find_360se_path():    
    upper_value_keyword = '360SE.EXE'    
    upper_item_name_keyword = '360SE6.EXE'    
    path = None    
    sub_key1 = r'SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths'    
    key1 = win32api.RegOpenKey(win32con.HKEY_LOCAL_MACHINE, sub_key1, 0, win32con.KEY_READ)    
    info1 = win32api.RegQueryInfoKey(key1)    
    for i in range(0, info1[0]):        
        key_name = win32api.RegEnumKey(key1, i)        
        if key_name.upper() == upper_item_name_keyword:
            sub_key2 = sub_key1 + '\\' + key_name
            key2 = win32api.RegOpenKey(win32con.HKEY_LOCAL_MACHINE, sub_key2, 0, win32con.KEY_READ)            
            info2 = win32api.RegQueryInfoKey(key2)            
            for j in range(0, info2[1]):                
                key_value = win32api.RegEnumValue(key2, j)[1]
                if key_value.upper().endswith(upper_value_keyword): 
                    path = key_value                    
                    break            
            win32api.RegCloseKey(key2)            
        break    
    win32api.RegCloseKey(key1)    
    return path