2.3.4 删除空白
favorite_language = 'python '
print (favorite_language.rstrip())
python
favorite_language = ' python'
print (favorite_language.lstrip())
python
2.3.5 使用字符串时避免语法错误
message = 'One of Python's strength is its diverse community.'
print (message)
message = 'One of Python's strength is its diverse community.'
^
SyntaxError: invalid syntax
message = "One of Python's strength is its diverse community."
print (message)
One of Python's strength is its diverse community.
2.4.1 整数
print (2+3)
5
print (3/2)
1.5
print (3 ** 2)
9
2.4.2 浮点数
print (0.1 + 0.1)
0.2
print (0.2 + 0.1)
0.30000000000000004
2.4.3 使用函数str()避免类型错误
age = 23
message = "Happy " + age + "rd Sirthday!"
print (message)
message = "Happy " + age + "rd Sirthday!"
TypeError: must be str, not int
age = 23
message = "Happy " + str(age) + "rd Sirthday!"
print (message)
Happy 23rd Sirthday!
2.5.1 如何编写注释
#向大家问好
print ("Hello Python world!")
Hello Python world!
作者： 阿飞
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
