Count Words in a String

class practiceYln():
    def __init__(self):
        self.text1 = None
        self.text2 = None

    def cwistr(self):
        text1 = input("please input a string：")
        text2 = input("please input a string you want to search in former string: ")
        count = text1.count(text2)  # 字符串的count方法
        if count > 1:
            count = str(count)  # int转换为str，否则无法进行后面的字符串拼接
            print(text2 +" showed " + count + " times in " + text1)
        else:
            count = str(count)
            print(text2 +" showed " + count + " times in " + text1)

tt = practiceYln()
tt.cwistr()

#结果是：
please input a string：baby
please input a string you want to search in former string: b
b showed 2 times in baby


# 有没有更简洁的写法呢？当然！

class practiceYln():
    def __init__(self):
        self.text1 = None
        self.text2 = None

    def cwistr(self):
        text1 = input("please input a string：")
        text2 = input("please input a string you want to search in former string: ")
        if text1.count(text2) > 1:
            print("%s showed %d times！" % (text2, text1.count(text2)))
            # 注意引用的文体： %s对应text2(字符型)，%d对应text1.count(text2)（整数型）
        elif text1.count(text2) == 1:
            print("%s showed %d time！" % (text2, text1.count(text2)))
        else:
            print("string not included")

tt = practiceYln()
tt.cwistr()

#结果是：
please input a string：baby
please input a string you want to search in former string: z
string not included

#别忘记python是面向对象的编程语言，所以我们可以调用已有的包实现这一功能

from collections import Counter
class practiceYln():
    def __init__(self):
        self.t1 = None
        self.t2 = None
        self.t3 = None
        self.t4 = None

    def cwistr(self):
        t1 = input("please input a string：")
        t2 = input("please input a string you want to search in former string: ")
        t3 = Counter(t1)
        t4 = str(t3[t2])
        print("the string showed " + t4 + " times.")

tt = practiceYln()
tt.cwistr()

# 结果是：
please input a string：Robert
please input a string you want to search in former string: r
the string showed 1 times.