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[英]Error - ValueError: invalid literal for int() with base 10: ' '
[英]Error : "ValueError: invalid literal for int() with base 10: '' while passing values to sql database from Tk entry widget
我正在嘗試從 Tkinter Gui 將值插入到 sql 數據庫中。 但是我收到此錯誤ValueError: invalid literal for int() with base 10: ''這是代碼:
con = cx_Oracle.connect("system/abc123")
print("connected")
cursor = con.cursor()
sql = "insert into student values('%d','%s','%d')"
rno = int(entRno.get())
name = entName.get()
marks = int(entMarks.get())
args = (rno,name,marks)
cursor.execute(sql % args)
con.commit()
msg = str(cursor.rowcount) + " records inserted"
messagebox.showinfo("Success",msg)
這是回溯:
Traceback (most recent call last):
File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 1883, in__call__
return self.func(*args)
File "C:\Users\Admin\Desktop\Tkinter Project\sam.py", line 108, in f5
rno = int(entRno.get())
ValueError: invalid literal for int() with base 10: ''
我應該怎么做才能解決這個問題?
我認為您可能想嘗試在 try/except 塊中傳入 int 值。 這個鏈接看起來足智多謀: http : //scipy-lectures.org/intro/language/exceptions.html喜歡這個
try:
rno = int(rno)
break
except ValueError:
raise (ValueError, print(some debug message or warning issue)
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