为什么我会收到“IndentationError: expected an indented block"? [英] Why am I getting "IndentationError: expected an indented block"?

问题描述

if len(trashed_files) == 0 :
    print "No files trashed from current dir ('%s')" % os.path.realpath(os.curdir)
else :
    index=raw_input("What file to restore [0..%d]: " % (len(trashed_files)-1))
    if index == "*" :
        for tfile in trashed_files :
            try:
                tfile.restore()
            except IOError, e:
                import sys
                print >> sys.stderr, str(e)
                sys.exit(1)
    elif index == "" :
        print "Exiting"
    else :
        index = int(index)
        try:
            trashed_files[index].restore()
        except IOError, e:
            import sys
            print >> sys.stderr, str(e)
            sys.exit(1)

我得到:

        elif index == "" :
        ^
    IndentationError: expected an indented block

推荐答案

如错误消息所示，您有缩进错误.这可能是由制表符和空格混合引起的.

As the error message indicates, you have an indentation error. It is probably caused by a mix of tabs and spaces.

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