vector = np.array('hello','world')
print (vector)
TypeErrorTraceback (most recent call last)CellIn[12], line 1----> 1vector=np.array('hello','world') 2print(vector)TypeError: data type 'world' not understood
解决方法：
vector = np.array(['hello','world'])
print (vector)
注意np.array的参数，正确的写法应该带有一个中括号
