defcheck_char(char):ifchar.isalpha():print(char,"is a letter.")elifchar.isdigit():print(char,"is a digit.")else:print(char,"is neither a letter nor a digit.")check_char('a')# Output: a is a letter.check_char('5'
letters=['A','B','C','D'] popped_letter=letters.pop() print(letters) print(popped_letter) 1. 2. 3. 4. 5. 最后输出为: ['A', 'B', 'C'] D pop()括号没数字默认为列表最后元素 而有数字则是指定该列表中对应数字的元素 如: letters=['A','B','C','D'] popped_letter=letters....
# (1) 计算某段文本中原音字母出现的次数 def cal_num(text): count = 0 for char in text: if char.lower() in "aeiou": count += 1 return count data = input("请输入一段文本:") c = cal_num(data) print("元音字母出现次数:", c) # (2) 计算初始本金为1万,年利率为0.0325的情况下,...
self.original_write(text[::-1])def__exit__(self,exc_type,exc_value,traceback):# ⑥ 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...
ascii_letters) for i in range(numOfLetter)] #打乱这个组合 slcChar = slcNum + slcLetter random.shuffle(slcChar) #生成密码 genPwd = ''.join([i for i in slcChar]) return genPwd if name == 'main': print (GenPassword(6)) 本文参与 腾讯云自媒体同步曝光计划,分享自作者个人站点/博客。
Else, If the character is not upper-case, keep it with no change. Let us now look at the code: shift = 3 # defining the shift count text = "HELLO WORLD" encryption = "" for c in text: # check if character is an uppercase letter ...
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...
In the new, event-driven code, the developer minimizes the amount of refactoring within parse that needs to be done, by replacing lines like: next char = get_ next_ character () With: next _char = (yield) Therefore turning parse into a generator-based coroutine. An event handler call...
""" 字符串操作函数 1 capitalize() 将字符串的第一个字符转换为大写 2 center(width, fillchar) 返回一个指定的宽度 width 居中的字符串,fillchar 为填充的字符,默认为空格。 3 count(str, beg= 0,end=len(string)) 返回 str 在 string 里面出现的次数,如果 beg 或者 end 指定则返回指定范围内 str 出...
check_end,可以是函数也可以是开关。检查游戏是否结束。在每个循环末尾需要进行检查,而这个函数的值决定了循环将重新进行或是结束。游戏结束有以下几种情况:(1)宝藏被挖到;(2)玩家尝试次数超过n次;(3)玩家选择退出。若满足退出条件,返回True,否则为False。