如何從字符串列表中刪除單詞列表？

Question

list1=['water', 'analog', 'resistance', 'color', 'strap','men', 'stainless', 'timepiece','brown','fast'] 

list2=['water resistant','water','red strap','digital and analog','analog', 'men', 'stainless steel'] 

，則輸出是

list=['water resistant','red strap','digital and analog','stainless steel'] 

Answer 1

您可以使用組操作：

list(set(list2) - set(list1)) 

可能的結果：

['red strap', 'digital and analog', 'stainless steel', 'water resistant'] 

如果你想保留你可以做的順序如下：

s = set(list1) 

[x for x in list2 if x not in s] 

結果：

['water resistant', 'red strap', 'digital and analog', 'stainless steel'] 

Answer 2

您可以使用set這一點。此外set您不會有任何重複的項目。

下面是從Python Shell中

>>> set1 = set(list1) 
>>> set2 = set(list2) 
>>> set1 
set(['brown', 'timepiece', 'color', 'stainless', 'men', 'resistance', 'fast', 'strap', 'water', 'analog']) 
>>> set1-set2 
set(['brown', 'timepiece', 'color', 'stainless', 'resistance', 'fast', 'strap']) 
>>> set2-set1 
set(['red strap', '**water resistant**', '**stainless steel**', '**digital and analog**']) 
>>> for each in (set2-set1): 
     print each 

red strap 
**water resistant** 
**stainless steel** 
**digital and analog** 
>>> list3 = list(set2-set1) 
>>> list3 
['red strap', '**water resistant**', '**stainless steel**', '**digital and analog**'] 

Answer 3

輸出如果你想

1. 從List2項目
2. 元素不list1

嘗試刪除*：

>>> list = [x.replace('*', '') for x in list2 if x not in list1] 
>>> list 
['water resistant', 'red strap', 'digital and analog', 'stainless steel'] 
>>> 

Answer 4

你可以這樣做。迭代列表1中列表1的單詞列表，然後使用迭代器刪除單詞。這對重複的單詞不起作用。

>>> for s in [a for a in list1[:] if a in list2[:]]: 
... list2.remove(s) 
... 
>>> list2 
['water resistant', 'red strap', 'digital and analog', 'stainless steel']