一个依赖node.js来执行js代码的python库
Project description
一个依赖node.js来执行js代码的库
环境
注意 需要安装好node.js, 并添加好环境变量!!!
安装
pip install pyevaljs3
快速开始
import pyevaljs3
js_code = "function f(args) {console.log(args); return 'ok';}; return f('args')"
result = pyevaljs3.eval_(js_code)
print(result) # 'ok'
js_code = "function f(arg1, arg2) {console.log(arg1, arg2); return arg1 + arg2;}"
ctx = pyevaljs3.compile_(js_code)
result = ctx.call('f', 'a', 'b')
print(result) # 'ab'
#另一钟传参方式
result = ctx.call('f', ['a', 'b'])
print(result) # 'ab'
API参考
pyevaljs3.JSEval
-
def compile(self, source: str = None, suffix: str = None):
编译javascript源代码
:param source: 源代码字符串或要读取的文件路径
:param suffix: js脚本文件名后缀(指定以什么模式执行), 默认是".js", 可选的值还有".cjs", ".mjs"等
:return: Context -
def eval(self, code: str = None, ignore_output=False):
执行javascript代码, 返回其结果
pyevaljs3.Context
- def call(self, func, *args):
调用指定的函数, 返回其结果
:param func: 函数名
:param args: 函数的参数列表
pyevaljs3的模块级函数
-
def compile_(source: str = None, mode: str = None) -> Context:
编译js源代码
:param source: 源代码字符串或要读取的文件路径
:param mode: 执行模式, 默认以.js的行为去执行
:return: Context -
def eval_(code: str = None, ignore_output=False):
执行javascript代码, 返回其结果
:param code: js代码
:param ignore_output: 是否忽略执行过程中的输出, 若为True则仅返回其结果, 默认不忽略(False)
使用自定义版本的node
- 通过设置坏境变量来使用自定义版本的node, 只需设置NODE_PATH、NODE坏境变量即可
import os
# 优先级最高
os.environ['NODE_PATH'] = '/path/to/node.exe'
# 或者
# 优先级其次
os.environ['NODE'] = '/path/to/node.exe'
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