未在python中定义全局名称
我得到一个名称错误：没有定义全局名称“valid\u username”，这让我很困惑。为什么会这样？我在实际调用之前声明了有效的_username函数，那么问题出在哪里 以下是代码完整代码：未在python中定义全局名称,python,Python,我得到一个名称错误：没有定义全局名称“valid\u username”，这让我很困惑。为什么会这样？我在实际调用之前声明了有效的_username函数，那么问题出在哪里 以下是代码完整代码： import webapp2 import cgi import re class WelcomeHandler(webapp2.RequestHandler): def get(self): self.response.out.write("Welcome, ") clas
import webapp2
import cgi
import re
class WelcomeHandler(webapp2.RequestHandler):
def get(self):
self.response.out.write("Welcome, ")
class MainPage(webapp2.RequestHandler):
def write_form(self, username="", username_error="", password_error="", verify_password_error="", email="",
email_error=""):
self.response.out.write(form % {
"username": username, "username_error": username_error,
"password_error": password_error,
"verify_password_error": verify_password_error,
"email": email, "email_error": email_error})
def checkEscaped(text):
return cgi.escape(text, quote="True")
def valid_username(username):
USER_RE = re.compile(r"^[a-zA-Z0-9_-]{3,20}$")
return USER_RE.match(checkEscaped(username))
def valid_password(password):
PASSWORD_RE = re.compile(r"^.{3,20}$")
return PASSWORD_RE.match(checkEscaped(password))
def valid_email(email):
if len(email) > 0:
EMAIL_RE = re.compile(r"^[\S]+@[\S]+\.[\S]+$")
return EMAIL_RE.match(checkEscaped(email))
else:
return True
def password_match(password, confirmPassword):
return password == confirmPassword
def get(self):
self.write_form()
def post(self):
input_username = self.request.get('username')
input_password = self.request.get('password')
input_verify_password = self.request.get('verify_password')
input_email = self.request.get('email')
username_error = ""
is_valid_name = valid_username(input_username)
if not is_valid_name:
username_error = "That's not a valid username."
password_error = ""
is_valid_password = valid_password(input_password)
if not is_valid_password:
password_error = "That wasn't a valid password."
verify_password_error = ""
is_valid_verify_password = password_match(input_password, input_verify_password)
if not is_valid_verify_password:
verify_password_error = "the passwords don't match"
email_error = ""
is_valid_email = valid_email(input_email)
if not is_valid_email:
email_error = "that's not a valid email"
if not (is_valid_name and is_valid_password and is_valid_verify_password and is_valid_email):
self.write_form(name, username_error, password_error, verify_password_error, email, email_error)
else:
self.redirect("/welcome")
app = webapp2.WSGIApplication([
('/', MainPage), ('/welcome', WelcomeHandler)], debug=True)
您需要通过
selfis_valid_password = self.valid_password(input_password)
checkEscaped（）self.checkEscaped（）password\u match（）self.password\u match（）selfdef checkEscaped(self, text):
# ...
def valid_username(self, username):
# ...
def valid_password(self, password):
# ...
def valid_email(self, email):
# ...
def password_match(self, password, confirmPassword):
# ...
当然，您可以将这四个方法移出类，并实际使它们成为全局函数而不是方法。在这种情况下，请再次关闭
selfselfis_valid_password = self.valid_password(input_password)
checkEscaped（）self.checkEscaped（）password\u match（）self.password\u match（）selfdef checkEscaped(self, text):
# ...
def valid_username(self, username):
# ...
def valid_password(self, password):
# ...
def valid_email(self, email):
# ...
def password_match(self, password, confirmPassword):
# ...
当然，您可以将这四个方法移出类，并实际使它们成为全局函数而不是方法。在这种情况下，请再次关闭
selfselfis_valid_password = self.valid_password(input_password)
checkEscaped（）self.checkEscaped（）password\u match（）self.password\u match（）selfdef checkEscaped(self, text):
# ...
def valid_username(self, username):
# ...
def valid_password(self, password):
# ...
def valid_email(self, email):
# ...
def password_match(self, password, confirmPassword):
# ...
当然，您可以将这四个方法移出类，并实际使它们成为全局函数而不是方法。在这种情况下，请再次关闭
selfselfis_valid_password = self.valid_password(input_password)
checkEscaped（）self.checkEscaped（）password\u match（）self.password\u match（）selfdef checkEscaped(self, text):
# ...
def valid_username(self, username):
# ...
def valid_password(self, password):
# ...
def valid_email(self, email):
# ...
def password_match(self, password, confirmPassword):
# ...
当然，您可以将这四个方法移出类，并实际使它们成为全局函数而不是方法。在这种情况下，请再次关闭
selfselfselfselfself