#chp15.常用文字字串函數
#範例15-2：查詢文字內是否有某個字串
#https://www.w3schools.com/python/python_strings.asp
#https://www.w3school.com.cn/python/python_strings.asp
#https://www.runoob.com/python3/python3-string.html


#1.----- 查詢某個字串是否在文字內？： if txt in a1 ---------
a1 = "tom, john, mike, jolin"
txt = "tom"


#2.----- 查詢某個字串是否在文字內？： txt in a1 ---------
a1 = "tom, john, mike, jolin"
txt = "tom"


#3.----- 查詢某個字串是否不在文字內？ if txt not in a1 ---------
a1 = "tom, john, mike, jolin"
txt = "peter"


#4.----- 文字的連接： + ---------  
a1 = "john"
a2 = "0922111333"


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#chp15.常用文字字串函數
#範例15-2：查詢文字內是否有某個字串
#https://www.w3schools.com/python/python_strings.asp
#https://www.w3school.com.cn/python/python_strings.asp
#https://www.runoob.com/python3/python3-string.html


#1.----- 查詢某個字串是否在文字內？： if txt in a1 ---------
a1 = "tom, john, mike, jolin"
txt = "tom"
if txt in a1:
  print(txt, "在文字內")
else:
  print(txt, "不在文字內")

#2.----- 查詢某個字串是否在文字內？： if txt in a1 ---------
a1 = "tom, john, mike, jolin"
txt = "tom"
print(txt in a1)

#3.----- 查詢某個字串是否不在文字內？ if txt not in a1 ---------
a1 = "tom, john, mike, jolin"
txt = "peter"
if not txt in a1:
  print(txt, "不在文字內")
else:
  print(txt, "在文字內")

#4.----- 文字的連接： + ---------  
a1 = "john"
a2 = "0922111333"
print(a1 + "的電話是" + a2)

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