如果“Uninstall”中有超过1024个子键怎么办？Use _winreg.QueryInfoKey(key)

Python2:import errno, os, _winreg

proc_arch = os.environ['PROCESSOR_ARCHITECTURE'].lower()

proc_arch64 = os.environ['PROCESSOR_ARCHITEW6432'].lower()

if proc_arch == 'x86' and not proc_arch64:

arch_keys = {0}

elif proc_arch == 'x86' or proc_arch == 'amd64':

arch_keys = {_winreg.KEY_WOW64_32KEY, _winreg.KEY_WOW64_64KEY}

else:

raise Exception("Unhandled arch: %s" % proc_arch)

for arch_key in arch_keys:

key = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, r"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall", 0, _winreg.KEY_READ | arch_key)

for i in xrange(0, _winreg.QueryInfoKey(key)[0]):

skey_name = _winreg.EnumKey(key, i)

skey = _winreg.OpenKey(key, skey_name)

try:

print _winreg.QueryValueEx(skey, 'DisplayName')[0]

except OSError as e:

if e.errno == errno.ENOENT:

# DisplayName doesn't exist in this skey

pass

finally:

skey.Close()

Python3:import errno, os, winreg

proc_arch = os.environ['PROCESSOR_ARCHITECTURE'].lower()

proc_arch64 = os.environ['PROCESSOR_ARCHITEW6432'].lower()

if proc_arch == 'x86' and not proc_arch64:

arch_keys = {0}

elif proc_arch == 'x86' or proc_arch == 'amd64':

arch_keys = {winreg.KEY_WOW64_32KEY, winreg.KEY_WOW64_64KEY}

else:

raise Exception("Unhandled arch: %s" % proc_arch)

for arch_key in arch_keys:

key = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, r"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall", 0, winreg.KEY_READ | arch_key)

for i in range(0, winreg.QueryInfoKey(key)[0]):

skey_name = winreg.EnumKey(key, i)

skey = winreg.OpenKey(key, skey_name)

try:

print(winreg.QueryValueEx(skey, 'DisplayName')[0])

except OSError as e:

if e.errno == errno.ENOENT:

# DisplayName doesn't exist in this skey

pass

finally:

skey.Close()