copy-file') str_temp = string.Template('''\ <src-file-name>$src</src-file-name> <des-file-name>$dest</des-file-name> ''') req_data = str_temp.substitute(temp=src_path, dest=dest_path) ret, _, _ = ops_conn.create(uri, req_data) if ops_return_result(ret): logging.err...
string.whitespace 包含所有ASCII中可当作空白的字符集合而成的字符串。这包括字符间的空格、 tab、 换行符(\n)、 return(\r)、 换页符(\f)和垂直制表符(\v -> vertical tab)。 2. 自定义字符串格式 内置string类提供了通过format()方法 执行复杂变量替换和值格式化的功能,参见PEP 3101。string模块中的Format...
def say_hello(name): return f"Hello {name}" def be_awesome(name): return f"Yo {name}, together we're the awesomest!" def greet_bob(greeter_func): return greeter_func("Bob") Here, say_hello() and be_awesome() are regular functions that expect a name given as a string. The gree...
def f1(delta_seconds): if delta_seconds < 11 * 24 * 3600: return import dis dis.dis(f1) # dis 执行结果 5 0 LOAD_FAST 0 (delta_seconds) 2 LOAD_CONST 1 (950400) 4 COMPARE_OP 0 (<) 6 POP_JUMP_IF_FALSE 12 6 8 LOAD_CONST 0 (None) 10 RETURN_VALUE >> 12 LOAD_CONST 0 (N...
Here, in this tutorial, we learned all the basics of Python which are variables, string, numbers, data types, tuples, lists, sets, dictionaries, conditional statements, loops, user-defined functions, and exception handling. If you want to go through more concepts of Python in-depth, this Tu...
我们将首先介绍创建脚本文件的基础知识。然后我们将继续查看一些常用语句。Python 语言中只有大约二十种不同类型的命令语句。我们已经在第一章中看过两种语句,Numbers, Strings, and Tuples:赋值语句和表达式语句。 当我们写这样的东西时: **>>>print("hello world")** ...
Return a copy of the string with only its first character capitalized. For 8-bit strings, this method is locale-dependent. str.center(width[, fillchar]) Return centered in a string of length width. Padding is done using the specified fillchar (default is a space). ...
open(img_file) out_img = in_img.resize(desktop_size) return out_img 在这里,我们有三种策略,每种策略都使用PIL来执行它们的任务。各个策略都有一个make_background方法,接受相同的参数集。一旦选择,就可以调用适当的策略来创建正确大小的桌面图像。TiledStrategy循环遍历可以适应图像宽度和高度的输入图像数量,...
通常,当我们使用数字时,偶尔也会使用其他类型的对象,我们希望使用某种类型的随机性。 Often when we’re using numbers, but also,occasionally, with other types of objects,we would like to do some type of r...
f-string是python3.6之后版本添加的,称之为字面量格式化字符串,是新的格式化字符串的语法。f-string格式化字符串以f开头,后面跟着字符串,字符串中的表达式用大括号{}包起来,它会将变量或表达式计算后的值替换进去,实例如下: # 使用 f-string 格式化输出 name = 'python' print(f'Hello {name}') # 替换变量...