Python 程序检查字符是字母还是数字

编写一个 Python 程序，通过实际示例检查字符是字母还是数字。

Python 程序检查字符是字母还是数字

此 Python 程序允许用户输入任何字符。接下来，我们使用 Elif 语句检查用户输入的字符是字母还是数字。

  • 在此，If 语句检查字符是否在 a 到 z 或 A 到 Z 之间，如果为 TRUE，则为字母。否则，它会进入 elif 语句。
  • 在 Elif 语句中，我们检查给定的字符是否在 0 到 9 之间。如果为真，则为数字；否则，它既不是数字也不是字母。
# 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 字符是字母还是数字输出

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

Python 程序使用 ASCII 值验证字符是字母还是数字

在此 Python 代码中，我们使用 ASCII 值来检查字符是字母还是数字。

# 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 函数查找字符是字母还是数字

在此示例 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还是数字。

# 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")
Python Program to check character is Alphabet or Digit 3