小编Sho*_*u93的帖子

我怀疑我想要清理.

考虑以下名为的模块ex_1.py:

print("Hello, I'm ex_1")
def greet(name):
 print("Hello, "+name+" nice to meet you! ")

现在考虑调用另一个1_client_ex_1.py将导入ex_1.py模块的文件.

import ex_1.py

现在,当我执行此文件时,我得到的输出为:

Hello, I'm ex_1

正如所料.

但是当我1_client_ex_1.py改为:

import ex_1.py
import ex_1.py

并执行它,它仍然只打印Hello, I'm ex_1一次.不应该打印两次吗？

unknown7cd1c37eb7ca:local shoaibali$ ruby -e "$(curl -fsSL   https://raw.github.com/mxcl/homebrew/go)"
-e:67: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
-e:96: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
It appears Homebrew is already installed. If your intent is to reinstall you
should do the following before running this installer again:
rm -rf /usr/local/Cellar /usr/local/.git && brew cleanup
unknown7cd1c37eb7ca:local shoaibali$ ls
CONTRIBUTING.md     foreman         hw_mp_userdata
Library         git         libexec
PortDetect.log      heroku          opt
bin         hw_mobile_userdata  share
unknown7cd1c37eb7ca:local shoaibali$

嘿伙计们,当我尝试安装ffmpeg时,我的brew有些问题.我想我做了不成熟的事情(注意 - 经过几个小时的尝试)卸载brew(通过我在线阅读的一些文章)并尝试重新安装它.但是当我尝试再次安装brew时,上面的输出会出现在我的终端中.如果显然没有Cellar文件,怎么能说已经安装了Homebrew？

嘿,我对以下我编写的python代码有疑问:

#create a list of elements
#use a dictionary to find out the frequency of each element
list = [1,2,6,3,4,5,1,1,3,2,2,5]
list.sort()
dict = {i: list.count(i) for i in list}
print(dict)

在字典压缩方法中,"for i in list"是提供给方法的序列吗？所以它需要1,2,3,4 ..作为键.我的问题是为什么不花1次？因为我已经说过"for i in list",所以不必将列表中的每个元素都作为键吗？

(我是python的新手,所以对我来说很容易!)