Python - 字符串列表中的自定义空间大小填充

在本文给出的字符串列表中，任务是编写一个Python程序，用指定的所需前导和尾随空格数填充每个字符串。

例子：

Input: test_list = [“Gfg”, “is”, “Best”], lead_size = 3, trail_size = 2

Output: [‘   Gfg  ‘, ‘   is  ‘, ‘   Best  ‘]

Explanation: Each word starts after 3 spaces and add 2 spaces after completion.

Input: test_list = [“Gfg”, “Best”], lead_size = 3, trail_size = 2

Output: [‘   Gfg  ‘, ‘   Best  ‘]

Explanation: Each word starts after 3 spaces and add 2 spaces after completion.

方法#1：使用循环

在此，我们使用循环执行添加尾随和前导所需空格的任务。 *运算符用于获取所需的空格数。

Python3

# Python3 code to demonstrate working of
# Custom space size padding in Strings List
# Using loop
  
# initializing lists
test_list = ["Gfg", "is", "Best"]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing padding numbers
lead_size = 3
trail_size = 2
  
res = []
for ele in test_list:
  
    # * operator handles number of spaces
    res.append((lead_size * ' ') + ele + (trail_size * ' '))
  
# printing result
print("Padded Strings : " + str(res))

输出：

The original list is : ['Gfg', 'is', 'Best']
Padded Strings : ['   Gfg  ', '   is  ', '   Best  ']

方法#2：使用列表理解

与上述类似，唯一的区别是使用列表理解作为解决问题的单线替代方法。

蟒蛇3

# Python3 code to demonstrate working of
# Custom space size padding in Strings List
# Using list comprehension
  
# initializing lists
test_list = ["Gfg", "is", "Best"]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing padding numbers
lead_size = 3
trail_size = 2
  
# using list comprehension for one liner alternative
res = [(lead_size * ' ') + ele + (trail_size * ' ') for ele in test_list]
  
# printing result
print("Padded Strings : " + str(res))

输出：

The original list is : ['Gfg', 'is', 'Best']
Padded Strings : ['   Gfg  ', '   is  ', '   Best  ']