写一个函数来合并两个列表…也许更多

Question

python新手…我试着写一个函数merge()来取两个列表并组合它们，然后我想将其扩展到n个数的列表。

我从这段代码中得到的输出只是grapes列表，而不是与apples列表连接。

使用我的函数失败:

grapes = ['purple', 'red']
apples = ['green', 'yellow', 'orange']
def merge():
''' merge the lists '''
for i in apples:
grapes.append(i)
print("Concatenated list: " + str(grapes))
merge()

输出:

Concatenated list: ['purple', 'red']

感谢您的阅读…

Answer 1

在输出葡萄之前应该先调用merge()

我的意思是:

grapes = ['purple', 'red']
apples = ['green', 'yellow', 'orange']
def merge():
''' merge the lists '''
for i in apples:
grapes.append(i)
merge()
print("Concatenated list: " + str(grapes))

或者你可以直接写:

fruits = grapes + apples
print(fruits)

Answer 2

使用

array1 = ["a" , "b" , "c" , "d"]
array = [1 , 2 , 3 , 4 , 5]
def merge(*array_list):
output_array = []
for array in array_list:
output_array = output_array + array
return output_array
merged_array = merge(array1 , array2)

希望能有所帮助:)