python - 如何检查列表是否为空？(How do I check if a list is empty?)

Question

For example, if passed the following:

(例如，如果通过以下内容：)

a = []

How do I check to see if a is empty?

(如何检查a是否为空？)

  ask by Ray Vega translate from so

Answer 1

if not a:
  print("List is empty")

Using the implicit booleanness of the empty list is quite pythonic.

(使用空list的隐式布尔值是非常Python的。)