显示此错误的最小工作示例:from os import listdir, getcwdfrom os.path import isfile, join, realpath, dirnameimport csvdef gd(mypath, myfile): # Obtain the number of columns in the data file with open(myfile) as f: reader = csv.reader(f, delimiter=' ', skipinitialspace=True) for i in range(20): row_20 = next(reader) # Save number of clumns in 'num_cols'. num_cols = len(row_20) return num_colsmypath = realpath(join(getcwd(), dirname(__file__)))# Iterate through all files. Stores name of file in 'myfile'.for myfile in listdir(mypath): if isfile(join(mypath,myfile)) and (myfile.endswith('.dat')): num_cols = gd(mypath, myfile)print(num_cols)我在该文件夹中只有一个名为“ data.dat”的文件,并python返回错误:----> 9 with open(myfile) as f:....IOError: [Errno 2] No existe el archivo o el directorio: u'data.dat'转换为无文件或目录:u'data.dat'。为什么在文件名的开头添加u,如何获取正确解析文件名的代码?
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