<p>我正在尝试将所有已处理的列表(删除空列表项、删除所有<code>\n</code>和<code>\r</code>等)添加到名为<code>allOrders</code>的空列表中。问题是代码执行后<code>allOrders</code>只包含作为最后一个附加的列表。你知道吗</p>
<pre class="lang-py prettyprint-override"><code>import os
if orderFilesListCount >= 1:
for singleOrderFile in orderFilesList: # does the following to all Orders in OrderFileList
orderContents = list() # creates empty list
dataRemoveSpaces = list() # creates empty list
allOrders = list() # creates empty list
f = open(os.path.join(directory, singleOrderFile), "rb") # opens each order file
data = f.read().decode("utf16") # decodes data from file
dataRemoveLine = data.rstrip().split('\n') # removes new lines
dataRemoveTabs = [s.strip('\r') for s in dataRemoveLine] # removes all /r from list items
dataRemoveEmpty = list(filter(None, dataRemoveTabs)) # removes all empty list items
for element in dataRemoveEmpty: # following code trimms all elements in list
element = element.strip()
dataRemoveSpaces.append(element) # add trimmed elements back to list
print(dataRemoveSpaces) # my verification if the list was sucessfuly processed
allOrders.append(dataRemoveSpaces) # appends allOrders list with processed list
</code></pre>
<p>我知道“处理”每一个单独的列表并不是代码的问题(多亏了last<code>print</code>-它看起来和它应该的完全一样)。你知道吗</p>
<p>这里有什么问题?我见过几个线程处理类似的问题,但不能将它们的解决方案应用到我的。你知道吗</p>