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python split list index out of range 在 [問題] 讀寫csv問題list index out of range - 看板Python - 批踢踢 ... 的推薦與評價


作者almaplty (八郎秋隆)
看板Python
標題[問題] 讀寫csv問題 list index out of range
時間Thu Sep 21 14:51:33 2017



labdata.csv 是一個很大筆的資料

run 圖中的程式後 會跳出IndexError: list index out of range

而test1.csv 只會被寫入前面大概一半的資料



row[1] = row[1].split()
row.insert(2,row[1][1])
row[1] = row[1][0]
如果沒有中間這三行 test1.csv就能夠被寫入全部資料

請問大家問題出在哪裡呢

有什麼方法能夠解決

因為資料只會越來越多QQ

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推 Sunal: 你要不要先看一下那三行是在做什麼事情 09/21 15:10
→ almaplty: 就是將row[1]以空格切割 拆成兩個放在row中 09/21 15:24
→ almaplty: ex. row = ['a','a a','a']變成 ['a','a','a',a']這樣 09/21 15:25
→ almaplty: ['a','a','a','a'] 09/21 15:26
→ shadow0326: 你確定檔案中每一行的row[1]都可以分割嗎 09/21 16:58
推 Sunal: 其實我的意思是樓上這樣 這三行做什麼事 若讀到非預期的 09/21 16:59
→ Sunal: row時要怎麼處理... 09/21 17:00
→ almaplty: row[1]是固定格式 確定可以 09/21 17:54
→ almaplty: 而且如果我將例如row[5] del 後 test1.csv這檔案 09/21 17:55
→ almaplty: 會再多好幾筆資料出來 09/21 17:55
→ almaplty: 所以我覺得很奇怪QQ 09/21 17:56
→ stucode: 問題應該就是樓上們說的非預期輸入。另外我用自己產生的 09/21 18:29
→ stucode: 資料測沒有你說的問題。可以考慮把csv檔及完整程式碼貼 09/21 18:30
→ stucode: 上來，不然大家就只能用水晶球幫你debug。 09/21 18:30
→ almaplty: 謝謝大家 的確是因為非預期輸入... 看好久才發現QQ 09/21 19:59






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#97. Maya Programming with Python Cookbook

return parts[-1] Python's split function breaks apart the string into an array of ... indicate the entire list, starting at index 1 (the second element).

#98. Florida Airbnb Shipping Container a Hit With '60s Pop Art

The display certainly stands out in this sedate residential neighborhood populated mostly by modest old Florida stuccos or split-level ...