Python - 在字符串中间添加短语

给定一个字符串，在它中间添加一个短语。

Input : test_str = ‘geekforgeeks is for geeks’, mid_str = “good” 
Output : geekforgeeks is good for geeks 
Explanation : Added just in middle, after 2 words.

Input : test_str = ‘geekforgeeks best’, mid_str = “is” 
Output : geekforgeeks is best 
Explanation : Added just in middle, after 1 word. 

方法 #1：使用split() +切片+ join()

在这种情况下，字符串被转换为一个单词列表，然后提取中间位置以附加一个新短语。添加后，字符串使用 join() 进行回转换。

Python3

# Python3 code to demonstrate working of
# Add Phrase in middle of String
# Using split() + slicing + join()
  
# initializing string
test_str = 'geekforgeeks is for geeks'
  
# printing original string
print("The original string is : " + str(test_str))
  
# initializing mid string
mid_str = "best"
  
# splitting string to list
temp = test_str.split()
mid_pos = len(temp) // 2
  
# appending in mid
res = temp[:mid_pos] + [mid_str] + temp[mid_pos:]
  
# conversion back
res = ' '.join(res)
  
# printing result
print("Formulated String : " + str(res))

输出

The original string is : geekforgeeks is for geeks
Formulated String : geekforgeeks is best for geeks

方法 #2：使用 split() + 切片 + join() [更紧凑]

和上面的方法类似，只是用one-liner的方式来解决这个问题，为了更紧凑。

蟒蛇3

# Python3 code to demonstrate working of
# Add Phrase in middle of String
# Using split() + slicing + join()
  
# initializing string
test_str = 'geekforgeeks is for geeks'
  
# printing original string
print("The original string is : " + str(test_str))
  
# initializing mid string
mid_str = "best"
  
# splitting string to list
temp = test_str.split()
mid_pos = len(temp) // 2
  
# joining and construction using single line
res = ' '.join(temp[:mid_pos] + [mid_str] + temp[mid_pos:])
  
# printing result
print("Formulated String : " + str(res))

输出

The original string is : geekforgeeks is for geeks
Formulated String : geekforgeeks is best for geeks