本篇文章给大家带来的内容是关于Python文件操作的相关知识介绍（代码示例），有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
1、文件操作
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 获取文件名和扩展名
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 判断文件是否存在
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 创建文件夹
import os
# Make multilayer directorys
os.makedirs("/path/to/dir")
# Make single directory
os.makedir("/path/to/dir") 
