在上述代码中,我们使用了else语句来处理has_digit不为None的情况,输出"字符串中包含数字。" 完整代码示例 下面是完整的代码示例,展示了整个流程的实现。 importre string=input("请输入一个字符串: ")has_digit=re.search(r'\d',string)ifnothas_digit:print("字符串中没有数字。")else:print("字符串中包含...
RegEx can be used to check if a string contains the specified search pattern. RegEx Module Python has a built-in package calledre, which can be used to work with Regular Expressions. Import theremodule: importre RegEx in Python When you have imported theremodule, you can start using regular...
class Sized(metaclass=ABCMeta): __slots__ = () @abstractmethod def __len__(self): return 0 @classmethod def __subclasshook__(cls, C): if cls is Sized: if any("__len__" in B.__dict__ for B in C.__mro__): #① return True #② return NotImplemented #③ ①如果在C.__mro...
Using this result we can check if both tuple lists are identical or not. Note: Thecmp()method is supported in Python 2. # Python program to check if two lists of# tuples are identical or not# Initializing and printing list of tuplestupList1=[(10,4), (2,5)] ...
| as significant digits (measured from the most signficant digit). | | If the two objects compare equal then they will automatically | compare almost equal. | | assertAlmostEquals = assertAlmostEqual(self, first, second, places=None, msg=None, delta=None) ...
sizeof_digit:size in bytes of the C type used to represent a digit sys.__interactivehook__ sys.intern(string) sys.is_finalizing() 如果python解释器正在关闭,返回True。 sys.last_type; sys.last_value; sys.last_traceback 这三个属性并不一定存在,它们在异常未被处理且解释器打印异常的错误信息以及堆...
Beginning with the user input obtained throughinput(), theremodule is imported to work with regular expressions. We define a regex pattern,^[0-9]+$, usingre.compile(), where^indicates the start of the string,[0-9]matches any digit, and$denotes the end of the string. ...
input_string = input("请输入一个字符串:") result = check_lowercase_or_digit(input_string) if result: print("字符串只包含小写字母或数字") else: print("字符串不只包含小写字母或数字") 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. ...
#Check evaluation results for the UserID = 1 test_ratings_df[test_ratings_df['userID'] == 1].sort_values(['rating','predictions'],ascending=False) 从以下结果(“图 6.5”)可以看出,该模型在预测训练期间看不到的电影的收视率方面做得很好: [外链图片转存失败,源站可能有防盗链机制,建议将图片保...
check_is_digit(num1) num2 = input("Enter number and hit enter") check_is_digit(num2) Run Output Enter number and hit enter 45 User input is Number Enter number and hit enter 45Jessa User input is string Also, If you can check whether the Python variable is a number or string, use...