How can you run a portion of code in Python?

In Python, you can use the hash symbol # to comment out lines of code that you do not want to run. The commented code will not be executed by the interpreter. Here is an example:

# 这是一行需要注释的代码
print("这行代码会被执行")

# 这是另一行需要注释的代码
# print("这行代码将不会被执行")

In the example above, the code on lines 2 and 5 has been commented out, leaving only line 3 to be executed.