Given a string str1 and we have to count the total numbers of uppercase and lowercase letters.

给定字符串str1 ，我们必须计算大写和小写字母的总数。

Example:

例：

    Input:
"Hello World!"
Output:
Uppercase letters: 2
Lowercase letters: 8
Input:
"[email protected]"
Output:
Uppercase letters: 1
Lowercase letters: 4

Method 1:

方法1：

(Manual) By checking each character of the string with a range of uppercase and lowercase letters using the conditional statement.

(手动)通过使用条件语句检查字符串中每个字符的大小写范围。

print("Input a string: ")
str1 = input()
no_of_ucase, no_of_lcase = 0,0
for c in str1:
if c>='A' and c<='Z':
no_of_ucase += 1
if c>='a' and c<='z':
no_of_lcase += 1
print("Input string is: ", str1)
print("Total number of uppercase letters: ", no_of_ucase)
print("Total number of lowercase letters: ", no_of_lcase)

Output

输出量

RUN 1:
Input a string:
Hello World!
Input string is:  Hello World!
Total number of uppercase letters:  2
Total number of lowercase letters:  8
RUN 2:
nput a string:
[email protected]
Input string is:  [email protected]
Total number of uppercase letters:  1
Total number of lowercase letters:  4

Method 2:

方法2：

By using islower() and isupper() methods

通过使用islower()和isupper()方法

print("Input a string: ")
str1 = input()
no_of_ucase, no_of_lcase = 0,0
for c in str1:
no_of_ucase += c.isupper()
no_of_lcase += c.islower()
print("Input string is: ", str1)
print("Total number of uppercase letters: ", no_of_ucase)
print("Total number of lowercase letters: ", no_of_lcase)

Output

输出量

RUN 1:
Input a string:
Hello World!
Input string is:  Hello World!
Total number of uppercase letters:  2
Total number of lowercase letters:  8
RUN 2:
nput a string:
[email protected]
Input string is:  [email protected]
Total number of uppercase letters:  1
Total number of lowercase letters:  4

翻译自: https://www.includehelp.com/python/program-to-input-a-string-and-find-total-number-of- uppercase-and-lowercase-letters.aspx