有錯誤代碼，如果語句

我剛剛成立了一個新的Python腳本，當我運行它，我得到的錯誤代碼：有錯誤代碼，如果語句

File "conversion.py", line 17 
    elif filetype == "Audio": 
    ^

我的代碼是：

if filetype == "Document": 
    path = raw_input("Please drag and drop the directory in which the file is stored into the terminal:") 
    os.chdir(path[1:-2]) 
    filename = raw_input("Please enter the name of the file you would like to convert, including the file-type. e.g. test.txt, however please do make sure that the file-name does not have any spaces:") 
    Fileextension = raw_input("What filetype would you like the program to convert your file to. E.g. .txt: ") 
    from subprocess import check_call 
subprocess.check_call(['unoconv', '-f', Fileextension, filename]) 

elif filetype == "Audio": 
    path = raw_input("Please drag and drop the directory in which the file is stored into the terminal:") 
    os.chdir(path[1:-2]) 
    filename = raw_input("Please enter the name of the file you would like to convert, including the file-type. e.g. test.txt, however please do make sure that the file-name does not have any spaces:") 
    Fileextension = raw_input("What filetype would you like the program to convert your file to. E.g. .mp3: ") 
    body, ext = os.path.splitext("filename") 
    check_call(["ffmpeg" ,"-i", filename, body Fileextension]) 

elif filetype == "Video": 
    path = raw_input("Please drag and drop the directory in which the file is stored into the terminal:") 
    os.chdir(path[1:-2]) 
    filename = raw_input("Please enter the name of the file you would like to convert, including the file-type. e.g. test.txt, however please do make sure that the file-name does not have any spaces:") 
    Fileextension = raw_input("What filetype would you like the program to convert your file to. E.g. .mp4: ") 
    body, ext = os.path.splitext("filename") 
    from subprocess import check_call 
    check_call(["ffmpeg" ,"-i", filename, body Fileextension]) 

elif filetype == "Image": 
    path = raw_input("Please drag and drop the directory in which the file is stored into the terminal:") 
    os.chdir(path[1:-2]) 
    filename = raw_input("Please enter the name of the file you would like to convert, including the file-type. e.g. test.txt, however please do make sure that the file-name does not have any spaces:") 
    Fileextension = raw_input("What filetype would you like the program to convert your file to. E.g. .Jpeg: ") 
    body, ext = os.path.splitext("filename") 
    from subprocess import check_call 
    check_call(["ffmpeg" ,"-i", filename, body Fileextension])

沒有任何人有任何想法至於這裏的錯誤是什麼。任何解決方案將非常感激。我一直試圖解決它一個小時，我仍然不知道爲什麼會發生。

來源

2015-05-26 Avery Ripoll Crocker

'subprocess.check_call（['unoconv'，'-f'，Fileextension，filename]）'識別，是錯誤類型？ –

什麼是完整的錯誤信息，並且您的縮進是否正確？你的'subprocess'行不縮進。如果應該，請修復它。如果不是，那是你的錯誤。 – Andy

這並不能解決你目前的問題，但是當[你以前的問題]（http://stackoverflow.com/questions/30459232/error-with-subprocess-in-python-script）的回答者告訴你刪除你的'+'操作符，我認爲他的意思是隻在逗號後面出現的那些操作符。你應該把check_call（[「ffmpeg」，「 - i」，filename，+ body + Fileextension]）'變成'check_call（[「ffmpeg」，「 - i」，filename，body + Fileextension]）， 'check_call（[「ffmpeg」，「 - i」，filename，body Fileextension]）'。（或者也許它應該是'check_call（[「ffmpeg」，「 - i」，filename，body，Fileextension]）？） – Kevin

您在混合製表符和空格，因此您的subprocess.check_call(['unoconv', '-f', Fileextension, filename])行的縮進程度不夠。 Python的擴展選項卡每個8位匹配，但你似乎已經配置編輯器縮進爲4個空格的標籤，而不是：

>>> lines = '''\ 
...    from subprocess import check_call  
...  subprocess.check_call(['unoconv', '-f', Fileextension, filename]) 
... ''' 
>>> lines.splitlines()[1] 
" subprocess.check_call(['unoconv', '-f', Fileextension, filename])" 
>>> lines.splitlines()[0] 
' \tfrom subprocess import check_call\t'

注意\t性格上import線，而下一行（首先打印以更好地調出標籤）。所有縮進行使用製表符，但subprocess.call()行除外。

配置您的編輯器以將選項卡擴展爲空格;當您避免縮進標籤時，Python效果最佳。 Python style guide強烈建議您在製表符上使用空格：

空格是首選的縮進方法。

選項卡應該完全用於與已用標籤縮進的代碼保持一致。

來源

2015-05-26 19:19:00

或者只使用標籤:) – YoYoYonnY

@YoYoYonnY：然後任何潛入的空間都會破壞你的碼。 *再次*。檢測雜散標籤比檢測雜散空間更容易。 –

奇怪的是我從來沒有像elif那樣崩潰，但總是出現縮進錯誤...因爲我總是使用製表符。 – YoYoYonnY

有錯誤代碼，如果語句

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