Python - 檢查兩個單詞是否在字符串中

Question

我想檢查Python中數組的每個元素中是否有兩個單詞「car」和「motorbike」。我知道如何檢查一個詞與in，但不知道如何處理2個單詞。非常感謝所有幫助

Answer 1

兩個詞解：

for string in array: 
    if 'car' in string and 'motorbike' in string.split(): 
     print("Car and motorbike are in string") 

字頭的解決方案，以檢查是否所有單詞test_words在string：

test_words = ['car', 'motorbike'] 
contains_all = True 

for string in array: 
    for test_word in test_words: 
     if test_word not in string.split():: 
      contains_all = False 
      break 
    if not contains_all: 
     break 

if contains_all: 
    print("All words in each string") 
else: 
    print("Not all words in each string") 

Answer 2

使用附配布爾值。

car=False 
motorbike=False 
for elem in array: 

     if "car" in elem: 
      car=True 
     if "motorbike" in elem: 
      motorbike=True 
     if car and motorbike: 
      break 

編輯：我只是讀「在每個元素」。只需使用AND。

Answer 3

我認爲一個簡單的解決辦法是這樣的：

all(map(lambda w: w in text, ('car', 'motorbike'))) 

但有可能是這個問題，這取決於你如何挑剔需要的比較是：

>>> text = 'Can we buy motorbikes in carshops?' 
>>> all(map(lambda w: w in text, ('car', 'motorbike'))) 
True 

寫着「車'和'摩托車'不在text，這仍然說True。你可能需要完全匹配的文字。我會這樣做：

>>> words = ('car', 'motorbike') 
>>> text = 'Can we buy motorbikes in carshops?' 
>>> set(words).issubset(text.split()) 
False 
>>> text = 'a car and a motorbike' 
>>> set(words).issubset(text.split()) 
True 

現在它的工作！如果我們有一個字符串列表

wanted_values = ("car", "motorbike") 
all(vehicle in text for text in wanted_values) 

所以：

l = ['some car and motorbike', 
    'a motorbike by a car', 
    'the car was followed by a motorbike'] 

lines_with_vehicles = [text for text in l 
         if all(vehicle in text for text in wanted_values)] 

用正則表達式，你可以這樣做：

Answer 4

我會用all功能

# no particular order 
car_and_motorbike_pattern = re.compile(r'(car.*motorbike|motorbike.*car)') 
all(car_and_motorbike_pattern.search(text) for text in list_of_expressions) 

# This works too 
car_or_motorbike_pattern = re.compile(r'(car|motorbike)') 
get_vehicles = car_or_motorbike_pattern.findall 
all(len(set(get_vehicles(text))) == 2 for text in list_of_expressions)