セッションに保存された数字をprintしたい

Question

前提・実現したいこと

セッションに保存された数字をprintしたい

発生している問題・エラーメッセージ

session is saved for 2
Internal Server Error: /something3
Traceback (most recent call last):
  File "/home/a/.local/lib/python3.8/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/home/a/.local/lib/python3.8/site-packages/django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/a/.local/lib/python3.8/site-packages/django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/a/Dropbox/!Django/something/views.py", line 64, in shiharai_saisoku_moushitatesho_3
    print('print_fee is ' + str(request.session.get['print_fee']))
TypeError: 'method' object is not subscriptable
[23/Aug/2020 02:04:31] "POST /something3 HTTP/1.1" 500 74671

該当のソースコード

def something(request):
    content = {
        'title': 'Page3/6',
        'form': something3(),
    }
    if request.method == 'POST':
        request.session['case_name'] = request.POST['billing_occurrence_name']
        request.session['number_of_dependant'] = request.POST['number_of_dependant']
        request.session['print_fee'] = request.POST['print_fee']  
        request.session['sending_fee'] = request.POST['sending_fee'] 
        request.session['notification_fee'] = request.POST['notification_fee']
        request.session['making_and_sending_fee'] = request.POST['making_and_sending_fee']
        if request.POST['qualification_fee'] == 0:
            request.session['qualification_fee'] = 0
            print(request.session.get('qualification_fee'))
        else:
            request.session['qualification_fee'] = request.POST['qualification_fee']
            print(request.session.get('qualification_fee'))
        print('session is saved for 2')
        print('print_fee is ' + str(request.session.get['print_fee']))
        print('sending_fee is ' + str(request.session.get['sending_fee']))
        print('notification_fee is' + str(request.session.get['notification_fee']))
        print('making_and_sending is ', str(request.session.get['making_and_sending']))
        print('qualification_fee is ', str(request.session.get['qualification_fee']))
    return render(request, './something4.html', content)

試したこと

printしたい値をin(),str()に変更してみましたが、エラーが出ます。

補足情報（FW/ツールのバージョンなど）

Python 3.8.2
Django3.0.6

Answer 1

request.session.get['print_fee']

上記を、下記のようにしてみてください。2番目の引数は、セッションにprint_feeが存在しない場合に返却される値(キーワード引数default)です。

request.session.get('print_fee', None)

How to use sessions