根据给定的输入，在文本中查找特定单词并计算其出现次数。


以下是一段文本：
“Python is a popular programming language. It was created in 1991 by Guido van Rossum. Python is known for its simplicity and versatile applications.”
要查找单词“Python”的出现次数。
单词“Python”在该文本中出现了2次。