75、python学习第一篇

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1、sys包下边的argv方法，从控制台获取数据

'''Created on 2017年4月8日@author: weizhen'''import sysOne = [" * ", "**", " * ", " * ", " * ", "***",'*********']Two = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Three = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Four = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Five = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Six = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Seven = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Eight = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Night = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Ten = ["***", "*   *", "*  *", "  *", " * ", "***",'*********']Digits = [One, Two, Three, Four, Five, Six, Seven, Eight, Night, Ten]try:    digits = sys.argv[1]    row = 0    while row < 7:        line = ""        column = 0        while column < len(digits):            number = int(digits[column])            digit = Digits[number]            line += digit[row] + " "            column += 1            print(line+'in')        print(line+'out')        row += 1except IndexError:    print("usage:bigdigits.py <number>")

就是会判断输入值的大小，并根据控制台输入数组的大小去对字符串进行append

这里要指出，line += digit[row] + " "这一行只是对字符串进行append，所有会用+=并不是对字符串进行连加

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