擅长:python、mysql、java
<p>一个2D列表会有行和列,比如说mXn,您的列表是2X4,但您只检查这两行</p>
<pre><code>fruits = [["Banana", "Apple", "Watermelon", "Apple"], ["Apple", "Banana", "Watermelon", "Lemon"]]
print(fruits)
findFruit = input("Fruit: ")
replaceFruit = input("Replace: ")
for i in range(len(fruits)): # len(fruits) is 2
for j in range(len(fruits[i])): # len(fruits[i]) is 4
if fruits[i][j] == findFruit:
fruits[i][j] = replaceFruit
print(fruits)
</code></pre>