在Python中保留随机名

Question

我在学习Python，并且拼凑了一个随机的句子生成器来练习。我如何保留随后部分的第一个随机选择的名称？

我有这样的：

def random_name(): 
    line_num = 0 
    selected_line = '' 
    with open('names.txt') as f: 
     while 1: 
      line = f.readline() 
      if not line: break 
      line_num += 1 
      if random.uniform(0, line_num) < 1: 
      selected_line = line 
    return selected_line.strip() 

重复动词和名词。然后我定义了一句：

def MakeSentence(): #makes sentence by combining name, verb, and noun 

x = random_name() + " is " + random_verb() + " " + random_noun() 
return x 

print("Type Yes to continue.") 
print("\n") 
print("Enter 'Q' to quit.") 
print("\n") 
response = 'x' #generic response as to not cause problems 

while (response != 'Q'): #case switch kills it all 

response = input("Would you like to continue?\n") 
if response == 'Q': 
    break 
elif response == 'Yes': 
    print(MakeSentence()) 

response = input("Is " + random_name() + " correct?\n") 
if response == 'Q': 
    break 
elif response == 'Yes': 
    print(random_name() + " is correct.\n") 

Answer 1

的MakeSentence（）：完成一次击中return语句，让你有执行之后貌似再重复几个print语句？

可以使用这个返回一个列表或元组：

def MakeSentence(): #makes sentence by combining name, verb, and noun 
    """ 
    (None)->List 
    Returns a list with a random name, verb and noun 
    """ 
    x = [random_name(), random_verb(), random_noun()] 
    return x 

可以做出许多的这些，但是例如，试试这个：

sample = MakeSentence() 

而且在以上格式打印出来：

print(sample[0] + " is " + sample[1] + " " + sample[2]) 

希望这会解决它为您服务！

我如何可以存储第一随机名称，动词和名词在 进一步的陈述中使用？

运行后，您可以看到解释器中发生了什么：该函数返回一个包含三个字符串的列表，并且可以使用括号[0]，[1]和[2]来访问如下所示。这三件事直到你或直到你写完为止。

>>> sample = MakeSentence() 
>>> print(sample) 
['Sean', 'eating', 'apples'] 
>>> print(sample[0] + " is " + sample[1] + " " + sample[2]) 
Sean is eating apples 

如果我想获得许多样品，我可以这样做：

many_samples = [] # make a list to store many lists 
for users in range(3): # to generate three samples: change to larger number if desired 
    many_samples.append(MakeSentence()) 

嵌套列表的一个例子可能是这样的（但这是重新排列，使其更易于阅读） ：

>>> print(many_samples) 
[ 
    ['Sean', 'eating', 'apples'], 
    ['Jane', 'drinking', 'oranges'], 
    ['Jim', 'chopping', 'chairs'] 
] 

# to print out these in a format as you had in the example: 
for each_elem in many_samples: 
    print(each_elem[0] + " is " + each_elem[1] + " " + each_elem[2]) 

所以我们遍历列表，列表中的每个元素都是另一个列表。 在每个子列表中，我们取第一个（位置0），第二个和第三个（位置2）元素，并将它们插入到我们的字符串输出中。