编写一个Python程序,使用For循环、while循环和函数(带示例)来计算字符串中的字母、数字和特殊字符。
Python程序:使用For循环计算字符串中的字母、数字和特殊字符
此Python程序允许用户输入一个字符串。
首先,我们使用For循环来迭代字符串中的字符。在For循环内部,我们使用Elif语句。
# Python program to Count Alphabets Digits and Special Characters in a String
string = input("Please Enter your Own String : ")
alphabets = digits = special = 0
for i in range(len(string)):
if(string[i].isalpha()):
alphabets = alphabets + 1
elif(string[i].isdigit()):
digits = digits + 1
else:
special = special + 1
print("\nTotal Number of Alphabets in this String : ", alphabets)
print("Total Number of Digits in this String : ", digits)
print("Total Number of Special Characters in this String : ", special)
Python计算字符串中的字母、数字和特殊字符的输出
Please Enter your Own String : abc!@ 12 cd 1212
Total Number of Alphabets in this String : 5
Total Number of Digits in this String : 6
Total Number of Special Characters in this String : 5
Python程序:使用While循环计算字符串中的字母、数字和特殊字符
在此Python字母、数字和特殊字符计数程序中,我们将每个字符与a、A、z、Z、0和9进行比较。根据结果,我们递增相应的计数器。
# Python Program to Count Alphabets Digits and Special Characters in a String
str1 = input("Please Enter your Own String : ")
alphabets = digits = special = 0
for i in range(len(str1)):
if((str1[i] >= 'a' and str1[i] <= 'z') or (str1[i] >= 'A' and str1[i] <= 'Z')):
alphabets = alphabets + 1
elif(str1[i] >= '0' and str1[i] <= '9'):
digits = digits + 1
else:
special = special + 1
print("\nTotal Number of Alphabets in this String : ", alphabets)
print("Total Number of Digits in this String : ", digits)
print("Total Number of Special Characters in this String : ", special)

程序:使用函数计算字符串中的字母、数字和特殊字符
在此程序中,我们将每个字符与ASCII值进行比较,以在此字符串中查找字母、数字和特殊字符。
# Python Program to Count Alphabets Digits and Special Characters in a String
str1 = input("Please Enter your Own String : ")
alphabets = digits = special = 0
for i in range(len(str1)):
if(ord(str1[i]) >= 48 and ord(str1[i]) <= 57):
digits = digits + 1
elif((ord(str1[i]) >= 65 and ord(str1[i]) <= 90) or (ord(str1[i]) >= 97 and ord(str1[i]) <= 122)):
alphabets = alphabets + 1
else:
special = special + 1
print("\nTotal Number of Alphabets in this String : ", alphabets)
print("Total Number of Digits in this String : ", digits)
print("Total Number of Special Characters in this String : ", special)
Python计算字符串中的字母、数字和特殊字符的输出
Please Enter your Own String : abcd*()_+12211!!!@sid4
Total Number of Alphabets in this String : 7
Total Number of Digits in this String : 6
Total Number of Special Characters in this String : 9