📅 最后修改于: 2020-11-08 07:37:41 🧑 作者: Mango
以下函数用于对dtype numpy.string_或numpy.unicode_的数组执行向量化字符串操作。它们基于Python内置库中的标准字符串函数。
| Sr.No. | Function & Description |
|---|---|
| 1 | add()
Returns element-wise string concatenation for two arrays of str or Unicode |
| 2 | multiply()
Returns the string with multiple concatenation, element-wise |
| 3 | center()
Returns a copy of the given string with elements centered in a string of specified length |
| 4 | capitalize()
Returns a copy of the string with only the first character capitalized |
| 5 | title()
Returns the element-wise title cased version of the string or unicode |
| 6 | lower()
Returns an array with the elements converted to lowercase |
| 7 | upper()
Returns an array with the elements converted to uppercase |
| 8 | split()
Returns a list of the words in the string, using separatordelimiter |
| 9 | splitlines()
Returns a list of the lines in the element, breaking at the line boundaries |
| 10 | strip()
Returns a copy with the leading and trailing characters removed |
| 11 | join()
Returns a string which is the concatenation of the strings in the sequence |
| 12 | replace()
Returns a copy of the string with all occurrences of substring replaced by the new string |
| 13 | decode()
Calls str.decode element-wise |
| 14 | encode()
Calls str.encode element-wise |
这些函数在字符数组类(numpy.char)中定义。较早的Numarray软件包包含chararray类。 numpy.char类中的以上函数在执行矢量化字符串操作时很有用。