一、字符串：一系列字符，python中用一號括起來的即為字符串，可單可雙

"This is a string."
‘This is also a string.‘

#引號靈活性的作用：可在字符串中包含引號和撇號

‘I told my friend,"python is my favorite language!"‘
"the language ‘Python‘ is named after Monty Python,not the snake."

#1.使用方法修改字符串大的小寫

name = "ada lovelace"
print(name.title())

name 
 
= "ada lovelace"
print(name.upper())

name = "ada lovelace"
print(name.lower())

#2.合並（拼接）字符串

first_name = ‘ada‘
last_name = ‘lovelace‘
full_name = first_name + ‘ ‘ +last_name

print(full_name)

print ("Hello," + full_name.title() + "!")

message = "Hello," + full_name.title() + "!"
print (message)

#3.制表符或換行符添加空白
#制表符:\t

print (‘python‘)
print (‘\tpython‘)

#換行符：\n

print (‘python‘)
print (‘\npython‘)
print (‘Languages:\nPython\nC\nJavaScript‘)

#同時使用制表符和換行符
print (‘Languages:\n\tPython\n\tC\n\tJavaScript‘)

#4.刪除空白:rstrip,lstrip,strip
#rstrip:刪除右側空白

#lstrip:刪除左側空白
#strip:刪除兩側空白

favorite_language = ‘
 
python ‘
print (favorite_language)

favorite_language = ‘python ‘
print (favorite_language.rstrip())


favorite_language = ‘python ‘
favorite_language = favorite_language.rstrip()
print (favorite_language)

favorite_language = ‘ python ‘
print (favorite_language.rstrip())
print (favorite_language.lstrip())
print (favorite_language.strip())

Python編程從入門到實踐-第2章-字符串