|
import sympy |
|
from flask import Flask, render_template, request |
|
import re |
|
from sympy import latex |
|
|
|
app = Flask(__name__) |
|
|
|
|
|
@app.route('/') |
|
def home(): |
|
return render_template('index.html') |
|
|
|
|
|
@app.route('/factorize', methods=['GET']) |
|
def factorize(): |
|
|
|
expression = request.args.get('expression') |
|
print(expression) |
|
if re.match(r'^[a-zA-Z0-9+\-*/()]+$', expression): |
|
expression = re.sub(r'([A-Za-z])([A-Za-z])', r'\1*\2', expression) |
|
expression = re.sub(r'([0-9])([A-Za-z])', r'\1*\2', expression) |
|
else: |
|
error = "您输入的字符不合规" |
|
return render_template('index.html', error=error) |
|
|
|
variables = list(set(expression)) |
|
try: |
|
symbols = sympy.symbols(variables) |
|
symbol_dict = dict(zip(variables, symbols)) |
|
expr = sympy.sympify(expression, locals=symbol_dict) |
|
factors = sympy.factor(expr) |
|
result = latex(factors) |
|
return render_template('index.html', result=result) |
|
except Exception: |
|
error_message = "*表示乘法，**表示乘方，括号统一使用小括号,数字与字母中间（或字母与字母中间）的乘号可以省略。" |
|
return render_template('index.html', error=error_message) |
|
|
|
if __name__ == '__main__': |
|
app.run(host='0.0.0.0', port=7860) |
|
|
