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今天写程序,想输出一个array的shape,原程序为: print('shape of testUImatrix:%s\nStart to make testUImatrix...'%(testuimat.shape)) 结果报错: TypeError: not all arguments converted during string formatting 这句话有什么问题嘛??感觉有点奇怪,之后google到了这个网页https://segmentfault.com/q/101000000…
原文地址 http://blog.stevex.net/string-formatting-in-csharp/ When I started working with the .NET framework, one thing puzzled me. I couldn’t find sprintf(). sprintf() is the C function that takes an output buffer, a format string, and any number of argu…
| \n | 换行   || \t | 制表符 || \  | 转义   || \\ | \      | the '%' operator is used to format a set of variables enclosed in a "tuple" ( a fixed size list)| %s                    | string                                                               …
One particularly useful string method is format. The format method is used to construct strings by inserting values into template strings. Consider this example for generating log messages for a hypothetical web server. log_message = "IP address {} a…
https://imliyan.com/blogs/article/Python3.6%E6%96%B0%E7%9A%84%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%A0%BC%E5%BC%8F%E5%8C%96%E8%AF%AD%E6%B3%95/ https://mlln.cn/2018/05/19/python3%20f-string%E6%A0%BC%E5%BC%8F%E5%8C%96%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%9A%84%E9%AB%…
print ("So, you're 5r old, %r tall and %r heavy." % (age, height, weight)) print ("So, you're %r old, %r tall and %r heavy." % (age, height, weight)) 说明前后%和后面的参数数量不对应.红色就是错误的地方.…
Where? 运行Python程序,报错出现在这一行 return "Unknow Object of %s" % value Why? %s 表示把 value变量装换为字符串,然而value值是Python元组,Python中元组不能直接通过%s 和 % 对其格式化,则报错 Way? 使用 format 或 format_map 代替 % 进行格式化字符串 出错代码 def use_type(value): if type(value) == int: return "i…
string.Format出现异常"输入的字符串格式有误"的解决方法 今天在做项目时,碰到一个很奇怪的问题,我使用string.Format居然报“输入的字符串格式有误”的错误,我调了很久,还是不对,不明白错 在哪里,后来还是google了一下,原来我在字符串中出现了"{"字符.而"{"字符若出现在string.Format中是必需转义的,也就是要用两 个"{{"代表一个"{",同时双下面把我查找到的解决方…
字符串 string 一.基本性质 不变性 Immutability 要变就 --> list --> string 二.功能函数 功能函数 S = 'Spam" S.find('pa') S.replace('pa', 'XYZ') S.split(',') S.isalpha(), S.isdigit() # 分割组合拳,先去掉尾巴的空格和转行,在split line.rstrip().split(',') In [5]: dir(S) Out[5]: ['__add__', '…