方法/步骤 1 打开PYTHON，新建一个空白的文档。2 list_example = [1, 3, 5, 6, 7, 9]tuple_example = (2, 4, 6, 7, 9)首先LIST用的是中括号，TUPLE用的是小括号。3 print("list =", len(list_example))print("tuple =", len(tuple_example))元素总和的表示方法是一样的。5 dir(list_examp...
元组的解构特性在函数调用时非常有用。当函数的参数列表中包含了多个参数,且这些参数的数量和元组中元素的数量相等时,我们可以直接将元组作为参数传递给函数,Python会自动将元组中的元素按对应位置转化为参数。 defadd(a,b,c):returna+b+c tuple_example=(1,2,3)result=add(*tuple_example)print(result)# 输出...
2, 3)#2. 字符串(string):my_string="Hello"my_tuple=tuple(my_string)print(my_tuple)# 输出: ('H', 'e', 'l', 'l', 'o')#3. 字典(dictionary):my_dict={'a':1,'b':2,'c':3}my_tuple=tuple(my_dict)print(my_tuple)# 输出: ('a', 'b', 'c')#4. 集合...
tuple_example=('a','b','c','d')string_example=str(tuple_example)print(string_example) 1. 2. 3. 输出结果将是: ('a', 'b', 'c', 'd') 1. 字符串转换为元组 与元组转换为字符串类似,我们可以使用eval()函数将字符串转换为元组。eval()函数是Python内置的一个函数,用于计算存储在字符串中...
Python列表函数&方法 n=[1,2,3,4,5,6] m=[7,8,9,10] n.extend(m) print n out:[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 7, 8, 9, 10] n.index(5) out:4 #列表操作补充--切片操作example = [0,1,2,3,4,5,6,7,8,9]#打印某一区间 左闭右开print(example[4:8])#想包含最...
# Example use on a file if __name__ == '__main__': with open('123.txt') as f: for line, prevlines in search(f, 'python', 5): for pline in prevlines: # 包含python的行 print(pline) # print (pline, end='') # 打印最后检查过的N行文本 ...
The constructor builds a tuple whose items are the same and in the same order asiterable‘s items.iterablemay be either a sequence, a container that supports iteration, or an iterator object. Ifiterableis already a tuple, it is returned unchanged. For example,tuple('abc')returns('a','b'...
In the final example, you create a tuple of homogeneous objects. All the items are strings representing the weekdays. The name of the tuple is a plural noun.In the case of days, you should note that Python ignores any extra comma at the end of a tuple, as it happens after "Sunday"....
以Python语言为例,示例如下: tuple1 = (1, 2, 3, 4, 5) # 创建一个包含五个元素的tuple tuple2 = ("apple", "banana", "cherry") # 创建一个包含三个字符串的tuple tuple3 = () # 创建一个空的tuple tuple4 = (1,) # 创建一个只包含一个元素的tuple ...
Example: Create tuples using tuple() t1 = tuple() print('t1 =', t1) # creating a tuple from a list t2 = tuple([1, 4, 6]) print('t2 =', t2) # creating a tuple from a string t1 = tuple('Python') print('t1 =',t1) # creating a tuple from a dictionary t1 = tuple({1...