python3 Strings

python 的文本类型
可以用’‘或””或“”““””标示文本。

a = "0"
b = "2"
print(a  + b)

字符串的操作

替换字符串

x = "Hello World"
x = x.replace("World", "Python")
print(x)

打印一个字符

x = "Hello World"
print(x[0])

打印多个字符

x = "Hello World"
print(x[0:4])

字符串大小写

x = "Hello World"
print(x.upper())

x = "Hello World"
print(x.lower())

字符串比较

x = "Hello World"

if x == "Hello World":
	print("ok")
else:
	print("False")

字符串查找

x = "All work and non play make jack all dull boy"

if "work" in x:
	print("Found!")

字符串换行输出

x = "All work \nand non play make jack all dull boy"
print(x)

转义\

x = "All work \\nand non play make jack all dull boy"
print(x)