oldFile = open(oldFileName,'rb') # 提取文件的后缀 fileFlagNum = oldFileName.rfind('.') if fileFlagNum > 0: fileFlag = oldFileName[fileFlagNum:] # 组织新的文件名字 newFileName = oldFileName[:fileFlagNum] + '[复件]' + fileFlag # 创建新文件 newFile = open(newFileName, 'wb'...
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_PAT = 'pat' FILE_TYPE_MOD = 'mod' FILE_TYPE_LIC = 'lic' FILE_TYPE_USER = 'user' FILE_TYPE_FEATURE_PLUGIN = 'feature-plugin' #日志等级 LOG_INFO_TYPE = 'INFO' LOG_WARN_TYPE = 'WARNING' LOG_ERROR_TYPE = 'ERROR' # Configure the default mode for activating the deployment file....
'short', 'show_config', 'sign', 'signbit', 'signedinteger', 'sin', 'sinc', 'single', 'singlecomplex', 'sinh', 'size', 'sometrue', 'sort', 'sort_complex', 'source', 'spacing', 'split', 'sqrt', 'square', 'squeeze', 'stack', 'std', 'str', 'str0', 'str_', '...
>>> str1 ="Life is too short for python">>>print(str1.index("short"))12 >>>print(str1.index("short",14)) Traceback (most recent call last): File"<stdin>", line 1,in<module>ValueError: substringnotfound 13.isalnum(self)
>>>'let'sgo!'File"",line1'let'sgo!'^SyntaxError:invalidsyntax 当人,对于单引号或者双引号这些特殊的符号,我们可以对他们进行转义。例如,对字符串中的单引号进行转义,示例代码如下: >>>'let\'s go!'"let's go! 上述代码中,使用斜线的方式,对单引号进行了转义,当解释器遇到这个转义字符时会明白这不是...
Let's start simple: open data for two years and concatenate them to one file: <xarray.Dataset>Dimensions:(lat:120,lon:300,time:365)Coordinates:lat(lat)float3220.1220.3820.6220.88...49.1249.3849.6249.88lon(lon)float32230.1230.4230.6230.9...304.1304.4304.6304.9time(time)datetime64[ns]2011-01-...
我们希望能从患者住院期间的临床记录来预测该患者未来30天内是否会再次入院,该预测可以辅助医生更好的选择治疗方案并对手术风险进行评估。在临床中治疗手段...
# Python version 3.8+ >>> a = "wtf_walrus" >>> a 'wtf_walrus' >>> a := "wtf_walrus" File "<stdin>", line 1 a := "wtf_walrus" ^ SyntaxError: invalid syntax >>> (a := "wtf_walrus") # This works though 'wtf_walrus' >>> a 'wtf_walrus'...
A very common idiom in Python for working with file data demonstrates the context manager:with open ( 'data.txt' , 'r' ) as f : data = f . read () This is good syntax because it simplifies the cleanup step where the file handle is closed. Using the context manager means that you...