初识python
1.环境准备：pc一个，我用的window10，python用的3.7最新的，ide用的 pycharm，markdown编辑器用的Typora
2.其他系统的环境可以自己百度安装
3.见面国际惯例hello word
import sys
print (sys.version)
print(sys.version_info)
print("Hello","www")
print("Hello","hello","world",sep=',',end='！');
print('Hello','world',end='!\n!')
print("I am %d years young" % 26)
my_year = 26
print("I am %d years young" % my_year)
my_name = 'jinxxx'
print("I am %s " % my_name)
my_name_str = 'jin' + 'xxx'
print("My name is %s " % my_name)
str_num = str(my_year)
test_str = 'I am ' + str_num + 'years young'
print(test_str)
输出结果：
3.7.4 (tags/v3.7.4:e09359112e, Jul 8 2019, 19:29:22) [MSC v.1916 32 bit (Intel)]
sys.version_info(major=3, minor=7, micro=4, releaselevel='final', serial=0)
Hello www
Hello,hello,world！Hello world!
!I am 26 years young
I am 26 years young
I am jinxxx
My name is jinxxx
I am 26 years young
包含直接输出，格式化输出，字符串拼接，int2str
更多请看https://www.cnblogs.com/QI1125/p/7640833.html
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