外部循环:for i in range(height)语句用于遍历每一层金字塔,i的值从0开始到height-1。 打印空格:在每一次循环中,使用print(' ' * (height - i - 1), end='')打印出适量的空格,使得星号可以在合适的位置。 打印星号:print('*' * (2 * i + 1))语句则用于打印星号,其数量根据层数的不同而变化。
str1="hello world"print(str1.endswith("d"))print(str1.endswith("ld"))print(str1.endswith(...
>>>basket = {'apple','orange','apple','pear','orange','banana'}>>>print(basket) 可以看到重复的元素被去除{'orange', 'banana', 'pear', 'apple'}>>>a =set('abracadabra')>>>b =set('alacazam')>>>a{'a', 'r', 'b', 'c', 'd'} a 去重后的字母>>>a - b a 有而 b 没...
2.string模块源代码 1 """A collection of string operations (most are no longer used). 2 3 Warning: most of the code you see here isn't normally used nowadays. 4 Beginning with Python 1.6, many of these functions are implemented as 5 methods on the standard string object. They used...
I have to print name with spaces, can u help me please? I got the code like this: classPerfil:def__init__(self,email,nome,cidade): self.email=email self.nome=nome self.cidade=cidadedef__str__(self):return"Perfil de "+self.nome+" ""("+self.email+")"" de "+self.cidadedefget...
and the original string. """ pass def rsplit(self, *args, **kwargs): # real signature unknown """ Return a list of the words in the string, using sep as the delimiter string. sep The delimiter according which to split the string. ...
C++ 和 Java 中,数组中的元素类型必须保持一致,而 Python 中则可以不同。Python 中的数组叫做 list,具有更多的高级功能。 从宏观上区分列表和数组,需要一个重要的概念:索引。 而列表中没有索引,这是数组与列表最大的不同点。 img 索引从0开始。
I want to fill out a string with spaces. I know that the following works for zero's: >>> print("'%06d'"%4) '000004' But what should I do when I want this?: 'hi ' of course I can measure string length and do str+" "*leftover, but I'd like the shortest way....
不同高度的三角形# 循环打印每一行foriinrange(height):# i 从0到height-1# 计算空格数spaces=height-i-1# 当前行空格 = 总高度 - 当前行 - 1# 计算星星数stars=2*i+1# 当前行星星数 = 2 * 当前行 + 1# 打印空格print(' '*spaces,end='')# 打印空格,不换行# 打印星星print('*'*stars)# ...
3. Strings as arrays 在python中,字符串表现为数组。方括号可用于访问字符串的元素。 字符在第n个位置 str='hello world'print(str[0])# hprint(str[1])# eprint(str[2])# lprint(str[20])# IndexError: string index out of range 4. String length ...