Python 技術點
1、文件操作
1-1 遍歷文件夾和文件
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 獲取文件名和擴展名
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 逐行讀取文本文件內容
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 寫文件
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 判斷文件是否存在
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 創建文件夾
import os
# Make multilayer directorys
os.makedirs("/path/to/dir")
# Make single directory
os.makedir("/path/to/dir")
(未完待續)