給定一個矩陣，我們的任務是編寫一個 Python 程序來轉換為矩陣，並使用不同的分隔符來分隔元素和行。
例子：
Input: test_list = test_list = [[1, 3, “gfg”], [2, “is”, 4], [“best”, 9, 5]], in_del, out_del = “,”, ” “
Output: 1,3,gfg 2,is,4 best,9,5
Explanation: Element in list separated by “,”, and lists separated by ” “.
Input: test_list = test_list = [[1, 3, “gfg”], [2, “is”, 4], [“best”, 9, 5]], in_del, out_del = “,”, “-“
Output: 1,3,gfg-2,is,4-best,9,5
Explanation: Element in list separated by “,”, and lists separated by “-“.
方法#1：使用Python join()用法及代碼示例+列表理解
在此，我們使用列表推導執行迭代每行的每個元素的任務。使用 join() 對具有不同分隔符的元素和行進行內連接和外連接。
Python3
# Python3 code to demonstrate working of
# Convert Matrix to String
# Using list comprehension + join()
# initializing list
test_list = [[1, 3, "gfg"], [2, "is", 4], ["best", 9, 5]]
# printing original list
print("The original list is:" + str(test_list))
# initializing delims
in_del, out_del = ",", " "
# nested join using join()
res = out_del.join([in_del.join([str(ele) for ele in sub]) for sub in test_list])
# printing result
print("Conversion to String:" + str(res))輸出：
The original list is:[[1, 3, ‘gfg’], [2, ‘is’, 4], [‘best’, 9, 5]]
Conversion to String:1,3,gfg 2,is,4 best,9,5
方法#2：使用Python map()用法及代碼示例+Python join()用法及代碼示例
在此，元素內部連接的任務是使用 map() 擴展到每個字符。其餘所有函數與上層方法類似。
Python3
# Python3 code to demonstrate working of
# Convert Matrix to String
# Using map() + join()
# initializing list
test_list = [[1, 3, "gfg"], [2, "is", 4], ["best", 9, 5]]
# printing original list
print("The original list is:" + str(test_list))
# initializing delims
in_del, out_del = ",", " "
# nested join using join()
# map() for joining inner elements
res = out_del.join(in_del.join(map(str, sub)) for sub in test_list)
# printing result
print("Conversion to String:" + str(res))輸出：
The original list is:[[1, 3, ‘gfg’], [2, ‘is’, 4], [‘best’, 9, 5]]
Conversion to String:1,3,gfg 2,is,4 best,9,5
相關用法
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