python3 下载 以及 练习1 以及 pycharm 专业版 安装

下载python：

https://www.python.org/downloads/release/python-365/

########sample 1 下载pycharm 社区版本，但是web 开发功能会被屏蔽。

 -> for windows

社区版与商业版的区别如下: https://www.jetbrains.com/pycharm/features/editions_comparison_matrix.html

下载python  pycharm 社区版（Community

https://www.jetbrains.com/pycharm/download/download-thanks.html?platform=windows&code=PCC

https://blog.csdn.net/chenggong2dm/article/details/9365437

 ->for linux

Installation Instructions

• Copy the pycharm-2019.2.tar.gz to the desired installation location 
  (make sure you have rw permissions for that directory)
• Unpack the pycharm-2019.2.tar.gz file to an empty directory using the following command: 
  tar -xzf pycharm-2019.2.tar.gz
• Note: A new instance MUST NOT be extracted over an existing one. The target folder must be empty.
• Remove the pycharm-2019.2.tar.gz to save disk space (optional)
• Run pycharm.sh from the bin subdirectory

# 长方形的99乘法
for i in range(1,10):
for j in range(1,10):
print("%d*%d=%2d" % (i, j, i*j),end=" ")
print("")

2.我国有13亿人口。年增长率位0.8%, 多少年超过40亿

i=1
a=13
while a<40:
a=a*(1.008)
i=i+1
if a >=40:
break
print (i)

3.编程计算一个班100名学生的平均成绩，然后统计高于平均分的人数

count = 5
s = []
for i in range(count):
print(i+1)
name = input('name:')
score = input('score:')
t = {}
t['name'] = name
t['score'] = int(score)
s += [t]

#max = 0
#min = 0
all=0
sum = 0
for i in range(count):
sum += s[i]['score']
a = int(sum/count)
print(a)

for i in range(count):

if a < s[i]['score']:
all = all + 1
# if min > s[i]['score']:
# min = i
# sum +=s[i]['score']
#print('max:' + s[max]['name'] + ' ' + str(s[max]['score']))
#print('min:' + s[min]['name'] + ' ' + str(s[min]['score']))
print('total:' + str(all))

PyCharm创建第一个项目

 

https://blog.csdn.net/MCJ_2017/article/details/80394974

create new project

选择项目路径

选择好之后点击create 创建

提示，关闭即可 close

可以看到，第一个learnPython项目就创建成功了

创建一个demo测试一下
项目右键，new python file

创建成功，写点什么吧

写个HELLO PYTHON 运行快捷键 Ctrl + shift + F10

打印成功，至此，第一个项目就创建完成了。

 

 

########sample 2 下载pycharm 商业版，并安装。

 

参考文档

https://blog.csdn.net/u014044812/article/details/78727496?utm_source=copy

使用方法2：

2.激活码激活

• 优点：Window、Mac、Ubantu都稳定有效，关键是这种激活方式不会产生其他影响

• 缺点：需要修改hosts文件

1. 修改hosts文件
   将0.0.0.0 account.jetbrains.com添加到hosts文件最后，注意hosts文件无后缀，如果遇到无法修改或权限问题，可以采用覆盖的方法去替换hosts文件
   
   修改后请检查hosts文件是否修改，激活码无法激活的原因99.99%是因为hosts没有修改正确
   
   Windows系统hosts文件路径为：c:windowssystem32driversetc
   Mac和Ubantu(Linux)系统hosts文件路径为：/etc
2. Linux和mac的hosts文件路径为：/etc        在命令行输入
3. 1.  
      cd /etc
   2.  
      sudo vim hosts
   3.  
      输入密码
   4.  
      i
   5.  
      粘贴**0.0.0.0 account.jetbrains.com**到文件最底部
   6.  
      按esc
   7.  
      输入 :wq 退出修改
   
   
   
   
4. 复制激活码
   打开PyCharm选择Activation code激活，然后复制下面的激活码点击激活。此激活码有效期为2018-10-14，大家可以关注微信公众号，在过期之前我会在公众号：裸睡的猪  推送新的激活码哦~

EB101IWSWD-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-Gbb7jeR8JWOVxdUFaXfJzVU/O7c7xHQyaidCnhYLp7v32zdeXiHUU7vlrrm5y9ZX0lmQk3plCCsW+phrC9gGAPd6WDKhkal10qVNg0larCR2tQ3u8jfv1t2JAvWrMOJfFG9kKsJuw1P4TozZ/E7Qvj1cupf/rldhoOmaXMyABxNN1af1RV3bVhe4FFZe0p7xlIJF/ctZkFK62HYmh8V3AyhUNTzrvK2k+t/tlDJz2LnW7nYttBLHld8LabPlEEjpTHswhzlthzhVqALIgvF0uNbIJ5Uwpb7NqR4U/2ob0Z+FIcRpFUIAHEAw+RLGwkCge5DyZKfx+RoRJ/In4q/UpA==-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