# 1
del arr # Deletes the array itself
del arr[:] # Deletes all the elements in the array
# 2
stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
stuff.insert(0, stuff[:]) # 区别
stuff.insert(0, stuff) # 区别
# 1
del arr # Deletes the array itself
del arr[:] # Deletes all the elements in the array
# 2
stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
stuff.insert(0, stuff[:]) # 区别
stuff.insert(0, stuff) # 区别