我查询其预计使用INT(的raw_input(...))将int用户输入Python 2.7版尝试,除了ValueError异常
然而,当用户不输入一个整数,即只打回,我得到一个ValueError。
def inputValue(inputMatrix, rangeRows, rangeCols, defaultValue, playerValue):
rowPos = int(raw_input("Please enter the row, 0 indexed."))
colPos = int(raw_input("Please enter the column, 0 indexed."))
while True:
#Test if valid row col position and position does not have default value
if rangeRows.count(rowPos) == 1 and rangeCols.count(colPos) == 1 and inputMatrix[rowPos][colPos] == defaultValue:
inputMatrix[rowPos][colPos] = playerValue
break
else:
print "Either the RowCol Position doesn't exist or it is already filled in."
rowPos = int(raw_input("Please enter the row, 0 indexed."))
colPos = int(raw_input("Please enter the column, 0 indexed."))
return inputMatrix
我试图将智能和使用尝试除非赶上ValueError异常,打印警告用户,然后()再次调用inputValue的。
def inputValue(inputMatrix, rangeRows, rangeCols, defaultValue, playerValue):
try:
rowPos = int(raw_input("Please enter the row, 0 indexed."))
except ValueError:
print "Please enter a valid input."
inputValue(inputMatrix, rangeRows, rangeCols, defaultValue, playerValue)
try:
colPos = int(raw_input("Please enter the column, 0 indexed."))
except ValueError:
print "Please enter a valid input."
inputValue(inputMatrix, rangeRows, rangeCols, defaultValue, playerValue)
在那里有问题吗? – 2011-02-17 05:29:13