Python Basics - basic grammar

Disclaimer: This article is a blogger original article, shall not be reproduced without the bloggers allowed. https://blog.csdn.net/sinat_29006909/article/details/91355912

We all know that not every programming language syntax is the same, so learn a new programming language, the time to master the grammar in order to allow developers to fill the gap.
Here comes the basis of learning Python editor IDLE ** (After installing the menu bar you can directly search IDLE) **

1.输出
print("Hello Wrold!")

2.注释
#单行注释

'''
多行注释
'''
3.数据类型
字符串
a = "string" 
b = 'string'
c = '''string'''

数字
d = 4 

列表
e = [2,'f','list']
f = ['2','f',[5,'f']]

元组tuple（元组中的数据是不能修改的）
g = (8,'4','tuple')
h = (6,'new',['4','fs','list'])
但元组h中的['4','fs','list']的内容是可以修改的

字典
{键：值，键：值}
i={"name":"lisa","sex":"female","age":18}

集合set（去除重复）
j = set("abcbcdeafgf")
print(j)会显示
{'d', 'b', 'c', 'f', 'a', 'e', 'g'}会把里面重复的项去除掉

if语句
a = 1
b = 2
if(a>b):
	print(a)
elif(a<b):
	print(b)
else:
	print("两数相等")

while语句
i = 0
while(i>5):
	print(i)
	i+=1

for语句
list = [9,3,"s","n"]
for i in list:
	print(i)

#for从0到10
for i in range(0,10):
	print(i)

#for从10到0
for i in range(10,0,-1):
	print(i)

循环中break,continue也是有效的

These are the basic syntax of Python