Python 程序：檢查字符是字母還是數字

寫一個 Python 程序，用一個實例來檢查字符是字母還是數字。

Python 程序檢查字符是字母還是數字

這個 python 程序允許用戶輸入任何字符。接下來，我們使用 Elif 語句來檢查用戶給定的字符是字母還是數字。

• 這裡 If 語句檢查字符是在 A 和 Z 之間還是在 A 和 Z 之間，如果是 TRUE，則是字母表。否則，它進入 elif 語句。
• 在 Elif 語句中，我們正在檢查給定的字符是否在 0 到 9 之間。如果是真的，就是一個數字；否則，它不是數字或字母。

# Python Program to check character is Alphabet or Digit
ch = input("Please Enter Your Own Character : ")

if((ch >= 'a' and ch <= 'z') or (ch >= 'A' and ch <= 'Z')): 
    print("The Given Character ", ch, "is an Alphabet") 
elif(ch >= '0' and ch <= '9'):
    print("The Given Character ", ch, "is a Digit")
else:
    print("The Given Character ", ch, "is Not an Alphabet or a Digit")

Python 字符是字母或數字輸出

Please Enter Your Own Character : j
The Given Character  j is an Alphabet
>>> 
Please Enter Your Own Character : 6
The Given Character  6 is a Digit
>>> 
Please Enter Your Own Character : .
The Given Character  . is Not an Alphabet or a Digit

使用 ASCII 值驗證字符是字母還是數字的 Python 程序

在這個 Python 代碼中，我們使用 ASCII 值來檢查字符是字母還是數字。

# Python Program to check character is Alphabet or Digit
ch = input("Please Enter Your Own Character : ")

if(ord(ch) >= 48 and ord(ch) <= 57): 
    print("The Given Character ", ch, "is a Digit") 
elif((ord(ch) >= 65 and ord(ch) <= 90) or (ord(ch) >= 97 and ord(ch) <= 122)):
    print("The Given Character ", ch, "is an Alphabet")
else:
    print("The Given Character ", ch, "is Not an Alphabet or a Digit")

Please Enter Your Own Character : q
The Given Character  q is an Alphabet
>>> 
Please Enter Your Own Character : ?
The Given Character  ? is Not an Alphabet or a Digit
>>> 
Please Enter Your Own Character : 6
The Given Character  6 is a Digit

Python 程序使用 isalpha，isdigit 函數查找字符是字母還是數字

在這個例子 python 代碼中，我們使用名為 isdigit 和 isalpha 的字符串函數來檢查給定的字符是字母還是數字。

# Python Program to check character is Alphabet or Digit
ch = input("Please Enter Your Own Character : ")

if(ch.isdigit()):
    print("The Given Character ", ch, "is a Digit")
elif(ch.isalpha()):
    print("The Given Character ", ch, "is an Alphabet")
else:
    print("The Given Character ", ch, "is Not an Alphabet or a Digit")