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1、文件操纵
1-1 遍历文件夹和文件
import os rootDir = "/path/to/root" for parent, dirnames, filenames in os.walk(rootDir): for dirname in dirnames: print("parent is:" + parent) print("dirname is:" + dirname) for filename in filenames: print("parent is:" + parent) print("filename is:" + filename) print("the full name of the file is:" + os.path.join(parent, filename))
1-2 猎取文件名和扩展名
import os path = "/root/to/filename.txt" name, ext = os.path.splitext(path) print(name, ext) print(os.path.dirname(path)) print(os.path.basename(path))
1-3 逐行读取文本文件内容
f = open("/path/to/file.txt") # The first method line = f.readline() while line: print(line) line = f.readline() f.close() # The second method for line in open("/path/to/file.txt"): print(line) # The third method lines = f.readlines() for line in lines: print(line)
1-4 写文件
output = open("/path/to/file", "w") # output = open("/path/to/file", "w+") output.write(all_the_text) # output.writelines(list_of_text_strings)
1-5 推断文件是不是存在
import os os.path.exists("/path/to/file") os.path.exists("/path/to/dir") # Only check file os.path.isfile("/path/to/file")
1-6 建立文件夹
import os # Make multilayer directorys os.makedirs("/path/to/dir") # Make single directory os.makedir("/path/to/dir")
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