Question

如何使此代码在3中工作？

请注意，我并不是在字符串实例级别询问"foo".upper()。

import string
try:
    print("string module, upper function:")
    print(string.upper)
    foo = string.upper("Foo")
    print("foo:%s" % (foo))
except (Exception,) as e:
    raise

输出2：

string module, upper function:
<function upper at 0x10baad848>
foo:FOO

输出3：

string module, upper function:
Traceback (most recent call last):
  File "dummytst223.py", line 70, in <module>
    test_string_upper()
  File "dummytst223.py", line 63, in test_string_upper
    print(string.upper)
AttributeError: module 'string' has no attribute 'upper'

help(string)也不是很有帮助。据我所知，剩下的唯一功能是string.capwords。

注意：有点黑，但这是我的短期解决方法。

import string

try:
    _ = string.upper
except (AttributeError,) as e:
    def upper(s):
        return s.upper()
    string.upper = upper

Answer 1

您描述的所有this.reset模块级函数都已在Python 3中删除。Python 2 string module documentation包含以下注释：

尽管这些功能要到Python 3才会被删除，您应该将其视为已弃用。

如果您在Python 2中拥有import _ from 'loadash' class MyApp extends Component { ... componentWillReceiveProps(nextProps) { const {data} = nextProps; // Invoke cloneDeep to get a clone of data that is also a unique // reference this.reset = _.cloneDeep(data); this.setState({ data }); } resetData(){ // Remember to clone reset data each time you reset data, so that // data is a reference to a new copy of this.reset, rather than // the reset data you stored when componentWillReceiveProps was // called this.setState({ data: _.cloneDeep(this.reset) }); } ... }，则需要在Python 3中将其转换为string。

Python 3中的模块级别string.upper函数在哪里？

1 个答案: