Python 程序：檢查字符是字母數字還是特殊字符

用一個實例編寫一個 Python 程序來檢查字符是字母數字還是特殊字符。

Python 程序檢查字符是字母數字還是特殊字符

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、數字還是特殊字符。

• 第一個 if 語句檢查給定字符是在 A 和 z 之間還是 A 和 z 之間，如果為真，則為字母表。否則，它進入 elif 語句。
• 在 Elif 語句中，我們正在檢查一個字符是否在 0 到 9 之間。如果為真，則為數字。否則，它是或特殊字符。

# Python Program to check character is Alphabet Digit or Special Character
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 a Special Character")

Python 字符是字母、數字或特殊字符輸出

使用 ASCII 值驗證字符是字母數字還是特殊字符的 Python 程序

在這個 Python 的例子中，我們使用 ASCII 值來檢查字符是字母、數字還是特殊字符。

# Python Program to check character is Alphabet Digit or Special Character
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 a Special Character")

Python 字符是字母、數字或特殊字符輸出

Please Enter Your Own Character : 0
The Given Character  0 is a Digit
>>> 
Please Enter Your Own Character : r
The Given Character  r is an Alphabet
>>> 
Please Enter Your Own Character : @
The Given Character  @ is a Special Character

Python 程序使用 isalpha，isdigit 函數查找字符是字母數字還是特殊字符

在這個 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、數字還是特殊字符。

# Python Program to check character is Alphabet Digit or Special Character
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 a Special Character")

Python 字符是字母、數字或特殊字符輸出

Please Enter Your Own Character : 4
The Given Character  4 is a Digit
>>> 
Please Enter Your Own Character : &
The Given Character  & is a Special Character
>>> 
Please Enter Your Own Character : b
The Given Character  b is an Alphabet