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我必須缺少某些東西,但是我無法找到最大值並使用csv.DictReader()函數打印它們。Python csv:找出最大值的行
CSV文件是一樣的東西(我已經削減領域以及行,因爲行是太寬了這種格式):
traverse;damage;hull_front;turret_back;penetration;full_name;tier;hull_back;turret_sides;type;hull_sides;turret_front
38;30;18;16;32;Light Tank MS-1;1;16;16;Light Tank;16;18
40;30;13;13;32;Light Tank BT-2;2;13;13;Light Tank;13;15
55;36;15;15;34;Light Tank T-26;2;15;15;Light Tank;15;15
(希望我得到了所有的領域,我不得不使用切斷與原文件。)
我閱讀
tanks = csv.DictReader(open('tanks.csv', 'r'), delimiter = ';')
這個文件,但是當我試圖發現瞭如哪一行在哪個列中具有最大的價值,我似乎無法通過字典來閱讀。我的嘗試是這樣的:
def top_values(tanks):
tank = list(itertools.islice(tanks,1,2))
best_tanks = dict({'turret_front':tank, 'turret_sides':tank, 'turret_back':tank,
'hull_front':tank, 'hull_sides':tank, 'hull_back':tank,
'penetration':tank, 'damage':tank, 'traverse':tank})
fields = ['turret_front', 'turret_sides', 'turret_back',
'hull_front', 'hull_sides', 'hull_back',
'penetration', 'damage', 'traverse']
for tank in tanks:
for field in fields:
if tank[field] > best_tanks[field][field]:
best_tanks[field] = tank
print "Best tanks by values:\n"
for field in fields:
tank = best_tanks[field]
print field + ": " + tank['full_name'] + "(" + tank[field] + ")"
,但我得到
Traceback (most recent call last):
File "./wotalyzer.py", line 102, in <module>
main(sys.argv[1:])
File "./wotalyzer.py", line 98, in main
top_values(tanks)
File "./wotalyzer.py", line 44, in top_values
print field + ": " + tank['full_name'] + "(" + tank[field] + ")"
TypeError: list indices must be integers, not str
我怎樣才能做到這一點?我想這樣做,以便輕鬆添加新字段。
是的,我做到了這一點,它修復了一個其他的錯誤(這導致了一個空的字典給函數)後,它的工作原理。 – Makis 2011-02-25 13:53:57