标签：round .exe 因此 module RoCE nis col ble 双引号
str_info = ‘{"name": "test", "age": 18}‘
dict_info = eval(str_info)
print("string info type is -->: %s" % (type(str_info)))
print("dict info type is -->: %s" % (type(dict_info)))
print(dict_info)
s_info = "{‘name‘: ‘nock‘, ‘age‘: 18}"
d_info = eval(s_info)
print("string info type is -->: %s" % (type(s_info)))
print("dict info type is -->: %s" % (type(d_info)))
print(d_info)
F:\python\python35\python.exe E:/code/clself/Test/test_example1.py
string info type is -->: <class ‘str‘>
dict info type is -->: <class ‘dict‘>
{‘name‘: ‘test‘, ‘age‘: 18}
string info type is -->: <class ‘str‘>
dict info type is -->: <class ‘dict‘>
{‘name‘: ‘nock‘, ‘age‘: 18}
Process finished with exit code 0
不过使用eval有一个安全性问题
import json
str_info = ‘{"name": "test", "age": 18}‘
dict_info = json.loads(str_info)
print("string info type is -->: %s" % (type(str_info)))
print("dict info type is -->: %s" % (type(dict_info)))
print(dict_info)
s_info = "{‘name‘: ‘nock‘, ‘age‘: 18}"
d_info = json.loads(s_info)
print("s info type is -->: %s" % (type(s_info)))
print("d info type is -->: %s" % (type(d_info)))
print(d_info)
结果如下：
F:\python\python35\python.exe E:/code/clself/Test/test_example1.py
string info type is -->: <class ‘str‘>
dict info type is -->: <class ‘dict‘>
{‘name‘: ‘test‘, ‘age‘: 18}
Traceback (most recent call last):
File "E:/code/clself/Test/test_example1.py", line 10, in <module>
d_info = json.loads(s_info)
File "F:\python\python35\lib\json\__init__.py", line 319, in loads
return _default_decoder.decode(s)
File "F:\python\python35\lib\json\decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "F:\python\python35\lib\json\decoder.py", line 355, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 2 (char 1)
Process finished with exit code 1
使用json模块进行转换存在一个问题,由于json语法规定 数组或对象之中的字符串必须使用双引号，不能使用单引号
import ast str_info = ‘{"name": "test", "age": 18}‘ dict_info = ast.literal_eval(str_info) print("string info type is -->: %s" % (type(str_info))) print("dict info type is -->: %s" % (type(dict_info))) print(dict_info) s_info = "{‘name‘: ‘nock‘, ‘age‘: 18}" d_info = ast.literal_eval(s_info) print("s info type is -->: %s" % (type(s_info))) print("d info type is -->: %s" % (type(d_info))) print(d_info)
F:\python\python35\python.exe E:/code/clself/Test/test_example1.py
string info type is -->: <class ‘str‘>
dict info type is -->: <class ‘dict‘>
{‘name‘: ‘test‘, ‘age‘: 18}
s info type is -->: <class ‘str‘>
d info type is -->: <class ‘dict‘>
{‘name‘: ‘test‘, ‘age‘: 18}
使用ast.literal_eval进行转换既不存在使用json 模块进行转换的问题，也不存在使用eval模块进行转换的安全性问题，因此推荐大家使用ast.literal_eval的方法。
标签：round .exe 因此 module RoCE nis col ble 双引号
原文地址：https://www.cnblogs.com/dieyaxianju/p/8986430.html
