从github安装python实度解析器时出现错误

Question

我正在尝试安装和使用python solidity parser by ConsenSys，pip3安装没有给出错误，但当我尝试导入模块时，它显示

File "<stdin>", line 1, in <module>
  File "/home/seed/.local/lib/python3.5/site-packages/python-solidity-parser/solidity_parser/__init__.py", line 1, in <module>
    from .parser import parse_file, parse, objectify, visit
  File "/home/seed/.local/lib/python3.5/site-packages/python-solidity-parser/solidity_parser/parser.py", line 10, in <module>
    from solidity_parser.solidity_antlr4.SolidityLexer import SolidityLexer
  File "/home/seed/.local/lib/python3.5/site-packages/python-solidity-parser/solidity_parser/solidity_antlr4/SolidityLexer.py", line 783, in <module>
    class SolidityLexer(Lexer):
NameError: name 'Lexer' is not defined

我尝试手动安装它，并确保具有所需的依赖项。我还安装了antlr4并下载了所需的固态语法。我在ubuntu 16上使用python 3.5.2。

Answer 1

我不能复制它。下面是我所做的：

mkdir solidity-parser-test
cd solidity-parser-test
python3 -m venv env
source env/bin/activate
pip3 install solidity_parser
python3 test.py test.sol

其中，最后一个命令将打印以下内容：

{'children': [{'name': 'solidity',
               'type': 'PragmaDirective',
               'value': '>=0.5.0<0.7.0'},
              {'baseContracts': [],
               'kind': 'contract',
               'name': 'Coin',
               'subNodes': [],
               'type': 'ContractDefinition'}],
 'type': 'SourceUnit'}

test.py是这样的：

import sys
import pprint

from solidity_parser import parser

sourceUnit = parser.parse_file(sys.argv[1])
pprint.pprint(sourceUnit) 

test.sol看起来像这样：

pragma solidity >=0.5.0 <0.7.0;

contract Coin {
}

注意:使用Python测试的版本是3.7.6