Python 程序：检查字符是字母数字还是特殊字符

用一个实例编写一个 Python 程序来检查字符是字母数字还是特殊字符。

Python 程序检查字符是字母数字还是特殊字符

这个 python 程序允许用户输入任何字符。接下来，我们使用 Elif 语句来检查用户给定的字符是字母、数字还是特殊字符。

• 第一个 if 语句检查给定字符是在 A 和 z 之间还是 A 和 z 之间，如果为真，则为字母表。否则，它进入 elif 语句。
• 在 Elif 语句中，我们正在检查一个字符是否在 0 到 9 之间。如果为真，则为数字。否则，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、数字或特殊字符输出

使用 ASCII 值验证字符是字母数字还是特殊字符的 Python 程序

在这个 Python 的例子中，我们使用 ASCII 值来检查字符是字母、数字还是特殊字符。

# 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、数字或特殊字符输出

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 函数查找字符是字母数字还是特殊字符

在这个 python 代码中，我们使用名为 isdigit 和 isalpha 的字符串函数来检查给定的字符是字母、数字还是特殊字符。

# 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、数字或特殊字符输出

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