Python程序通过在每个元素后添加给定的字符串来将元组转换为列表

给定一个元组。任务是通过在每个元素后添加给定的字符串将其转换为 List。

例子：

Input : test_tup = (5, 6, 7), K = "Gfg" 
Output : [5, 'Gfg', 6, 'Gfg', 7, 'Gfg'] 
Explanation : Added "Gfg" as succeeding element.

Input : test_tup = (5, 6), K = "Gfg" 
Output : [5, 'Gfg', 6, 'Gfg'] 
Explanation : Added "Gfg" as succeeding element.

方法 #1：使用列表推导

在此，我们为元组的每个元素和一个后续元素构造一个元组，然后运行一个嵌套循环以使用列表理解来展平每个构造的元组。

Python3

# Python3 code to demonstrate working of
# Convert tuple to List with succeeding element
# Using list comprehension
 
# initializing tuple
test_tup = (5, 6, 7, 4, 9)
 
# printing original tuple
print("The original tuple is : ", test_tup)
 
# initializing K
K = "Gfg"
 
# list comprehension for nested loop for flatten
res = [ele for sub in test_tup for ele in (sub, K)]
 
# printing result
print("Converted Tuple with K : ", res)

输出：

The original tuple is :  (5, 6, 7, 4, 9) 
Converted Tuple with K :  [5, ‘Gfg’, 6, ‘Gfg’, 7, ‘Gfg’, 4, ‘Gfg’, 9, ‘Gfg’]

方法 #2：使用 chain.from_iterable() + list() + 生成器表达式

这与上述方法类似，不同之处在于通过使用chain.from_iterable() 进行展平来避免嵌套循环。

Python3

# Python3 code to demonstrate working of
# Convert tuple to List with succeeding element
# Using chain.from_iterable() + list() + generator expression
from itertools import chain
 
# initializing tuple
test_tup = (5, 6, 7, 4, 9)
 
# printing original tuple
print("The original tuple is : ", test_tup)
 
# initializing K
K = "Gfg"
 
# list comprehension for nested loop for flatten
res = list(chain.from_iterable((ele, K) for ele in test_tup))
 
# printing result
print("Converted Tuple with K : ", res)

输出：

The original tuple is :  (5, 6, 7, 4, 9) 
Converted Tuple with K :  [5, ‘Gfg’, 6, ‘Gfg’, 7, ‘Gfg’, 4, ‘Gfg’, 9, ‘Gfg’]