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content will be learn: how to use set. set is a object ,characters :not be repetitive,can be hashing. startup in two way : set () can be add and delet 阅读全文
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def add(*args): sum=0 for i in args: sum+=i add(1,2,3,4) print(add) # nano def add(*args): sum=0 for i in args: sum+=i return sum,123,[1,2,3] add(1,2, 阅读全文
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define function .return value is required. instance: def f(): print('hello world') return 10 # return represents two replications. 1:process is execut 阅读全文
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import sys,time for i in range(10): sys.stdout.write('***") can output *************** standard input: stdin standard output: stdout test； import sys, 阅读全文
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list ,dict,tuple, or docentment all can use for in loop> number=0 for i in file: number+=1 if i ==3: i=" ".join((i.strip,'word') print(i) read article 阅读全文
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chinese Ascii unicode--utf-8 The history of compute programe develpement,as long as compute programing language. The C++，Java,Javascript,python,eclips 阅读全文
