从此链接跟进： How do i store the output of the 'count' variable into a list? (python)
这是我的代码：
def printTable(items):
counter_list = []
for i in range (len(items[0])):
print ()
counter = 0
for j in range(len(items)):
if len(items[i][j]) > counter:
counter = len(items[i][j])
counter_list.append(counter)
itemName = items[i][j]
print ('the longest string is: ' + itemName + '; and its length is ' + str(counter))
print ('Counter list: ' + str(counter_list))
tableData = [['apples','oranges','cherries','banana'],
['Alice','Bob','Carol','David'],
['dogs','cats','moose','goose']]
printTable(tableData)
这个输出是：
the longest string is: cherries; and its length is 8
Counter list: [6, 7, 8]
the longest string is: Alice; and its length is 5
Counter list: [6, 7, 8, 5]
the longest string is: moose; and its length is 5
Counter list: [6, 7, 8, 5, 4, 5]
Traceback (most recent call last):
File "/Users/Inder/Documents/printTable.py", line 19, in <module>
printTable(tableData)
File "/Users/Inder/Documents/printTable.py", line 7, in printTable
if len(items[i][j]) > counter:
IndexError: list index out of range
答案 0 :(得分：0)
如果项目的长度超过前一项，则将每个项目附加到<GridView x:Name="GridView1" ItemContainerStyle="{StaticResource testGrid}" ItemsSource="{x:Bind testValue}" Width="1740" Height="835" IsHitTestVisible="False" ScrollViewer.HorizontalScrollBarVisibility="Hidden" Margin="75,190,75,100" FontFamily="Segoe MDL2 Assets" IsDoubleTapEnabled="False" IsHoldingEnabled="False" IsRightTapEnabled="False" IsTapEnabled="False">
<GridView.ItemTemplate>
<DataTemplate x:DataType="data:Room">
<local:TemplateGrid x:Name="TemplateGridControl"/>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
。
counter_list另外：代替def printTable(items):
counter_list = []
for i in range (len(items[0])):
print ()
counter = 0
for j in range(len(items)):
if len(items[i][j]) > counter:
counter = len(items[i][j])
itemName = items[i][j]
counter_list.append(counter)
print ('the longest string is: ' + itemName + '; and its length is ' + str(counter))
print ('Counter list: ' + str(counter_list))
查看enumerate。
实际上根本不需要使用项目索引。 这是稍微重构的版本：
range(len(items))您可能还想看一下精彩的Counter模块：
def printTable(items):
counter_list = []
for row in items:
longest_item, longest_len = '', 0
for item in row:
if len(item) > longest_len:
longest_item, longest_len = item, len(item)
counter_list.append(longest_len)
print (f'the longest string is: {longest_item}; and its length is {longest_len}')
print ('Counter list: ' + str(counter_list))