1、main.py
from flask_wtf import FlaskForm
from flask import Flask,render_template
from wtforms import StringField,PasswordField,SubmitField
app = Flask(__name__)
app.secret_key='suibian'
class LoginForm(FlaskForm):
username = StringField(u"用户名：")
password = PasswordField(u'密码：')
password2 = PasswordField(u'确认密码：')
submit = SubmitField(u'提交：')
@app.route('/',methods=['GET','POST'])
def loging():
logings = LoginForm()
return render_template('myhtml.html',forms = logings)
if __name__=='__main__':
app.run()
2、myhtml.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>flask框架测试</title>
</head>
<body>
<form method="post">
<label>用户名：</label><input type="text" name="username"><br>
<label>密码：</label><input type="password" name="password"><br>
<label>确认密码：</label><input type="password" name="password2"><br>
<input type="submit" value="提交"><br>
{%for message in get_flashed_messages()%}
{{message}}
{%endfor%}
</form>
<br>
<form method="post">
{{forms.username.label}}{{forms.username}}<br>
{{forms.password.label}}{{forms.password}}<br>
{{forms.password2.label}}{{forms.password2}}<br>
{{forms.submit}}<br>
</form>
</body>
</html>