Python – 双拆分字符串到矩阵

给定一个字符串，执行双重拆分，第一个用于行，第二个用于单个元素，以便给定的字符串可以转换为矩阵。

例子：

Input : test_str = ‘Gfg,best*for,all*geeks,and,CS’, row_splt = “*”, ele_splt = “,” 
Output : [[‘Gfg’, ‘best’], [‘for’, ‘all’], [‘geeks’, ‘and’, ‘CS’]] 
Explanation : String split by rows, and elements by respective delims.

Input : test_str = ‘Gfg!best*for!all*geeks!and!CS’, row_splt = “*”, ele_splt = “!” 
Output : [[‘Gfg’, ‘best’], [‘for’, ‘all’], [‘geeks’, ‘and’, ‘CS’]] 
Explanation : String split by rows, and elements by respective delims. 

方法 #1：使用 split() + 循环

在此，第一个 split() 用于构造 Matrix 的行，然后嵌套 split() 以获取各个元素之间的分离。

Python3

# Python3 code to demonstrate working of 
# Double Split String to Matrix
# Using split() + loop
  
# initializing string
test_str = 'Gfg,best#for,all#geeks,and,CS'
  
# printing original string
print("The original string is : " + str(test_str))
  
# initializing row split char 
row_splt = "#"
  
# initializing element split char 
ele_splt = ","
  
# split for rows
temp = test_str.split(row_splt)
res = []
  
for ele in temp:
      
    # split for elements
    res.append(ele.split(ele_splt))
          
# printing result 
print("String after Matrix conversion : " + str(res))

输出：

The original string is : Gfg,best#for,all#geeks,and,CS
String after Matrix conversion : [[‘Gfg’, ‘best’], [‘for’, ‘all’], [‘geeks’, ‘and’, ‘CS’]]

方法 #2：使用列表理解 + split()

这是可以执行此任务的另一种方式。在此，我们使用类似的过程，但单线解决问题。

蟒蛇3

# Python3 code to demonstrate working of 
# Double Split String to Matrix
# Using list comprehension + split()
  
# initializing string
test_str = 'Gfg,best#for,all#geeks,and,CS'
  
# printing original string
print("The original string is : " + str(test_str))
  
# initializing row split char 
row_splt = "#"
  
# initializing element split char 
ele_splt = ","
  
# split for rows
temp = test_str.split(row_splt)
  
# using list comprehension as shorthand
res = [ele.split(ele_splt) for ele in temp]
          
# printing result 
print("String after Matrix conversion : " + str(res))

输出：

The original string is : Gfg,best#for,all#geeks,and,CS
String after Matrix conversion : [[‘Gfg’, ‘best’], [‘for’, ‘all’], [‘geeks’, ‘and’, ‘CS’]]