Buggy python submission (verdict: Runtime Error):
swithCount, lightCount = map(int, input().split())
swithList = [0] * lightCount

for i in range(swithCount):
    connectedLightList = list(map(int, input().split()))
    for lightIndex in connectedLightList[1:]:
        lightIndex -= 1
        swithList[i] = swithList[i] | 1 << lightIndex

expectedLightStatusList = list(map(int, input().split()))
expectedLightStatus = 0

for i, eachStatus in enumerate(expectedLightStatusList):
    expectedLightStatus = expectedLightStatus | eachStatus << i

resultCount = 0
for eachSwitchSet in range(1 << swithCount):
    actuallyLightStatus = 0
    for switchIndex in range(swithCount):
        if eachSwitchSet >> switchIndex & 1:
            actuallyLightStatus = actuallyLightStatus ^ swithList[switchIndex]

    if expectedLightStatus == actuallyLightStatus:
        resultCount += 1

print(resultCount)


Fixed submission:
swithCount, lightCount = map(int, input().split())
swithList = [0] * swithCount

for lightIndex in range(lightCount):
    connectedSwitchList = list(map(int, input().split()))
    for si in connectedSwitchList[1:]:
        switchIndex =  si - 1
        swithList[switchIndex] = swithList[switchIndex] | 1 << lightIndex

expectedLightStatusList = list(map(int, input().split()))
expectedLightStatus = 0

for i, eachStatus in enumerate(expectedLightStatusList):
    expectedLightStatus = expectedLightStatus | eachStatus << i

resultCount = 0
for eachSwitchSet in range(1 << swithCount):
    actuallyLightStatus = 0
    for switchIndex in range(swithCount):
        if eachSwitchSet >> switchIndex & 1:
            actuallyLightStatus = actuallyLightStatus ^ swithList[switchIndex]

    if expectedLightStatus == actuallyLightStatus:
        resultCount += 1

print(resultCount)

Buggy python submission (verdict: Runtime Error):
swithCount, lightCount = map(int, input().split())
swithList = [0] * lightCount

for i in range(swithCount):
    connectedLightList = list(map(int, input().split()))
    for lightIndex in range(connectedLightList[1:]):
        lightIndex -= 1
        swithList[i] = swithList[i] | 1 << lightIndex

expectedLightStatusList = list(map(int, input().split()))
expectedLightStatus = 0

for i, eachStatus in enumerate(expectedLightStatusList):
    expectedLightStatus = expectedLightStatus | eachStatus << i

resultCount = 0
for eachSwitchSet in range(1 << swithCount):
    actuallyLightStatus = 0
    for switchIndex in range(swithCount):
        if eachSwitchSet >> switchIndex & 1:
            actuallyLightStatus = actuallyLightStatus ^ swithList[switchIndex]

    if expectedLightStatus == actuallyLightStatus:
        resultCount += 1

print(resultCount)

Fixed submission:
swithCount, lightCount = map(int, input().split())
swithList = [0] * swithCount

for lightIndex in range(lightCount):
    connectedSwitchList = list(map(int, input().split()))
    for si in connectedSwitchList[1:]:
        switchIndex =  si - 1
        swithList[switchIndex] = swithList[switchIndex] | 1 << lightIndex

expectedLightStatusList = list(map(int, input().split()))
expectedLightStatus = 0

for i, eachStatus in enumerate(expectedLightStatusList):
    expectedLightStatus = expectedLightStatus | eachStatus << i

resultCount = 0
for eachSwitchSet in range(1 << swithCount):
    actuallyLightStatus = 0
    for switchIndex in range(swithCount):
        if eachSwitchSet >> switchIndex & 1:
            actuallyLightStatus = actuallyLightStatus ^ swithList[switchIndex]

    if expectedLightStatus == actuallyLightStatus:
        resultCount += 1

print(resultCount)