試圖理解精簡 Python

Question

我試圖了解這段代碼是如何以長格式布局的

proposed = dict((k, v) for k, v in args.iteritems() if v is not None)

我能想到的最好的是以下內容，但它不起作用：

for k,v in args.iteritems():
    print "value of v is: %s" % v
    if v is not None:
    proposed = dict(k,v)

但是它會引發以下錯誤：

類型錯誤：dict 預計最多 1 個參數，得到 2 個

Answer 1

嘗試：

proposed=dict()
for k,v in args.iteritems():
  print "value of v is: %s" % v
  if v is not None:
    proposed[k] = v #This is the part you got wrong