Python程序来计数给定字符串中的单词？
假设我们有一个“字符串”和“单词”，我们需要使用python查找该单词在字符串中的出现次数。这就是我们在本节中要执行的操作，计算给定字符串中的单词数并打印出来。
计算给定字符串中的单词数
方法1：使用for循环
#方法1：使用for循环
test_stirng = input("要搜索的字符串是： ")
total = 1
for i in range(len(test_stirng)):
if(test_stirng[i] == ' ' or test_stirng == '\n' or test_stirng == '\t'):
total = total + 1
print("Total Number of Words in our input string is: ", total)结果
要搜索的字符串是： Python is a high level language. Python is interpreted language. Python is general-purpose programming language Total Number of Words in our input string is: 16
#方法2：使用while循环
test_stirng = input("要搜索的字符串是： ")
total = 1
i = 0
while(i < len(test_stirng)):
if(test_stirng[i] == ' ' or test_stirng == '\n' or test_stirng == '\t'):
total = total + 1
i +=1
print("Total Number of Words in our input string is: ", total)结果
要搜索的字符串是： Python is a high level language. Python is interpreted language. Python is general-purpose programming language Total Number of Words in our input string is: 16
#方法3：使用功能
def Count_words(test_string):
word_count = 1
for i in range(len(test_string)):
if(test_string[i] == ' ' or test_string == '\n' or test_string == '\t'):
word_count += 1
return word_count
test_string = input("要搜索的字符串是：")
total = Count_words(test_string)
print("Total Number of Words in our input string is: ", total)结果
要搜索的字符串是：Python is a high level language. Python is interpreted language. Python is general-purpose programming language Total Number of Words in our input string is: 16
上面也有其他几种方法，可以找到用户输入的字符串中的单词数。