002 变量和简单的数据类型_string.py

# 字符串：

# 修改字符串的大小写：
name = "ada lovelace" 
print(name.title())  # 可以将首字母转换为大写；
print(name.lower()) 
print(name.upper()) 

# 合并（拼接）字符串：
first_name = "ada" 
last_name = "lovelace" 
full_name = first_name + " " + last_name 
message = "Hello " + full_name.title() + "!" 
print(message) 

# 使用制表符和换行符来添加空白：
print("Language:\n\tPython\n\tC\n\tJavaScript") 

# 删除空白
favorite_language = 'python ' 
print(favorite_language.rstrip())  # 原来的值并没有变化，需要再次赋值；
favorite_language = favorite_language.rstrip() 
print(favorite_language) 

# 使用字符串的时候，避免语法错误；注意单引号和双引号的使用；
message = "One of Python's strengths is its diverse community."
print(message) 

# 练习
name_test = 'allen observer'
print("Hello " + name_test + ", would you like to learn some Python today?")

print(name_test.title())
print(name_test.upper())
print(name_test.lower())

print('Albert Einstein once said, "A person who never made a mistake never tried anything new."')

famous_person = 'Albert Einstein'
message = famous_person + ' once said, "A person who never made a mistake never tried anything new."'
print(message)

famous_person = '\tAlbert\tEinstein\t'
print(famous_person.strip())  # 删除两边空格；
print(famous_person.rstrip())  # 删除右边空格；
print(famous_person.lstrip())  # 删除左边空格；