This example demonstrates how to use the any and isalpha functions to check if a character string contains a letter from the alphabet.Let’s check our first character string my_string1:print(any(c.isalpha() for c in my_string1)) # Check if letters are contained in string # True...
defcheck_letter(string,letter):ifletterinstring:print(f"The string '{string}' contains the letter '{letter}'.")else:print(f"The string '{string}' does not contain the letter '{letter}'.")# 示例调用check_letter("Hello, World!","o")check_letter("Hello, World!","z") 1. 2. 3. ...
def check_number_exist(m_str): for c in m_str: if c.isnumeric(): return True return False def check_letter_exist(m_str): for c in m_str: if c.isalpha(): return True return False def check_supper_exist(m_str): for c in m_str: if c.issupper(): return True return False ...
In addition, we canaccess just a specific characteror aslice of charactersof a string. We might want to do this, for example, if we have a text that’s too long to display and we want to show just a portion of it. Or if we want to make an acronym by taking the first letter of...
int PySequence_Check(PyObject *o)如果对象提供序列协议,则返回1,否则返回0。请注意,对于具有__getitem__()方法的 Python 类,除非它们是dict子类[...],否则它将返回1。我们期望序列还支持len(),通过实现__len__来实现。Vowels没有__len__方法,但在某些情况下仍然表现为序列。这对我们的目的可能已经足够了...
sys.stdout.write=self.original_write # ⑦ifexc_type is ZeroDivisionError:# ⑧print('Please DO NOT divide by zero!')returnTrue # ⑨ #⑩ ① Python 会以除self之外没有其他参数调用__enter__。 ② 保留原始的sys.stdout.write方法,以便稍后恢复。
elapsed = time.perf_counter() - t0print(f'\n{count}downloads in{elapsed:.2f}s')if__name__ =='__main__': main(download_many) ⑯ ① 导入httpx库。它不是标准库的一部分,因此按照惯例,导入应放在标准库模块之后并空一行。 ② ISO 3166 国家代码列表,按人口递减顺序列出前 20 个人口最多的...
letterifnotre.search(r'[a-z]',password):returnFalse# Check if the password contains at least one digitifnotre.search(r'\d',password):returnFalse# Check if the password contains at least one special characterifnotre.search(r'[!@#$%^&*(),.?":{}|<>]',password):returnFalse# If all...
We are not following the single responsibility principle to the letter. It would be good to simply write just following: def execute(action): return action() We can implement any authorization and authentication functionality in another place, in a decorator, like so: def execute(action, *...
('请输入棋子纵坐标0-14:'))breakexceptValueError:print("您输入的不是数字,请重新输入!")continueifninrange(15):print('yes')else:print('纵坐标超出范围,请重新输入!')n=int(input('请输入棋子纵坐标0-14:'))ifset_chess(m,n,letter):breakelse:continue# 新增一个打印棋盘函数,利用print自带功能,...