style: Resolve code correctness warning

frappe/app.py

@@ -185,7 +185,7 @@ def make_form_dict(request):
 		args = request.form or request.args
 
 	if not isinstance(args, dict):
-		frappe.throw("Invalid request arguments")
+		frappe.throw(_("Invalid request arguments"))
 
 	try:
 		frappe.local.form_dict = frappe._dict({ k:v[0] if isinstance(v, (list, tuple)) else v \

frappe/sessions.py

@@ -313,7 +313,7 @@ class Session:
 			""", (self.sid, get_expiry_period_for_query(self.device)))
 
 		if rec:
-			data = frappe._dict(eval(rec and rec[0][1] or '{}'))
+			data = frappe._dict(frappe.safe_eval(rec and rec[0][1] or '{}'))
 			data.user = rec[0][0]
 		else:
 			self._delete_session()

frappe/website/page_controllers/web_page.py

@@ -1,5 +1,4 @@
 import frappe
-from frappe import _
 
 class WebPage(object):
 	def __init__(self, path=None, http_status_code=None):