forAllBright

// 在 for 的高级用法中不能动态的删除集合元素。
public class Test {
    public static void main(String[] args) {
        ArrayList<String> str = new ArrayList<>();
        str.add("h");
        str.add("e");
        str.add("ll");
        str.add("o");
        for(String i:str) {
            if(i.equals("e")) {

forAllBright

[innotec@innotec ~]$ ps aux | grep 'manage.py' | awk '{print $2}' | xargs kill -9

# add alias in .bashrc

# kill python processes
alias ppsk="pkill -f manage.py"
# or 
[innotec@innotec ~]$ killall python
# or
alias pk="ps aux | grep 'manage.py' | awk '{print $2}' | xargs kill -9"

forAllBright

Create a Bootable Win7 USB Stick on OSX

Prerequesites:

• 4GB+ USB Stick
• Windows 7 ISO from Microsoft downloaded to your OSX-Machine

Preparing the drive

1. Open Disk utility
2. Find the drive, format it with the following options:

• Choose Master Boot Record (MBR)

forAllBright

#时间转为时间戳
def time_handle(time_in): #time_in is str type
    d = datetime.datetime.strptime(time_in, "%m/%d/%Y %H:%M:%S")
    x1 = time.mktime(d.timetuple())   #get the timestamp
    return x1

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# 读取 csv 文件，添加标题行
mobi = r"/Users/pmz/Project/MOBIKE_CUP_2017/225W.csv"
df = pd.read_csv(mobi,header=0,names=['time','number'])
print(df.head())