我一直在寻找python界的Scott Meyers

Ned Batchelder - Facts and Myths about Python names and values - PyCon 2015:  

            https://www.youtube.com/watch?v=_AEJHKGk9ns

Ned Batchelder -- Loop like a native: while, for, iterators, generators :

             https://www.youtube.com/watch?v=EnSu9hHGq5o

Transforming Code into Beautiful, Idiomatic Python :

            https://www.youtube.com/watch?v=OSGv2VnC0go

之前写了一段python想一下子把十几M文件,读取到内存，然后写了一段这样的代码：

totalStr=""
line=f.readline()
while(line):
    totalStr += line.strip()
    line=f.readline()

然后读一个十几M的文件要了十分钟左右吧...[掩面哭]

后来我换成了：

 totalStrList=[]
 line=f.readline()
 while(line):
     totalStrList.append( line.strip() )
     line=f.readline()
totalStr = ''.join(totalStrList)

然后用了不到一秒吧.....[再次掩面哭]

:)