GeezerVison is showing github.com — LearnPython/FileReadCopyBasic.py at master · Pragad/LearnPython

Expand file tree

FileReadCopyBasic.py

Copy path

More file actions

Latest commit

History

114 lines (92 loc) · 2.72 KB

FileReadCopyBasic.py

Copy path

File metadata and controls

114 lines (92 loc) · 2.72 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

# !/usr/bin/python

import os, sys, random

import shutil

# https://stackoverflow.com/questions/489861/locking-a-file-in-python

#from filelock import FileLock

#https://pythonhosted.org/lockfile/lockfile.html

from lockfile import LockFile

# Open a file

fd = os.open("foo.txt", os.O_RDWR)

# Reading text

ret = os.read(fd, 12)

print ret

#assert os.path.exists("foo1.txt")

#with FileLock("myfile.txt"):

# # work with the file as it is now locked

# print("Lock acquired.")

lock = LockFile("myfile.txt")

with lock:

print lock.path, 'is locked.'

with open("foo.txt", "r") as f:

f.seek(135);

print f.read(6);

f.seek(0, 2)

eof = f.tell()

print eof

offset = random.randint(0, eof)

numBytes = random.randint(0, eof - offset)

print "Offset=%d numBytes=%d" % (offset, numBytes)

f.seek(offset)

print f.read(numBytes)

shutil.copyfile("foo.txt", "foo.txt" + ".old")

#shutil.copytree("bar", "bar" + ".old")

# Generate Random dir inside a dir

def __newname():

random = random.Random(seed)

l = random.randint(1, 16)

n = [random.choice("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789") for i in xrange(l)]

return "".join(n)

def __newsubpath(path):

while True:

p = os.path.join(path, __newname())

if not os.path.exists(p):

return p

def __getdir_recurse(path):

try:

n = random.choice(os.listdir(path))

except:

return path

p = os.path.join(path, n)

if os.path.isdir(p):

return __getdir_recurse(p)

else:

return path

def __getdir(path):

p = __getdir_recurse(path).replace(path, '')

print "new path:" , p

parts = p.split(os.sep)

print "parts1:" , parts

r = random.randint(1, len(parts))

print "rand:" , r

parts = parts[0:r]

print "parts2:" , parts

return os.path.join(path, *parts)

def __getsubpath(path):

try:

n = random.choice(os.listdir(path))

except:

return path

return os.path.join(path, n)

basepath = "/Users/pragad/ItsMine/Dev_Git/LearnPython/deleteThisDir"

#basepath = __newsubpath(__getdir(basepath))

print __getdir(basepath)

def listdir_nohidden(path):

for f in os.listdir(path):

if not f.startswith('.'):

yield f

# This get a deeper directory path

def getdir_recurse(path):

try:

dirent = list(listdir_nohidden(path))

print dirent

n = random.choice(dirent)

print n

except Exception as e:

print e

newpath = "/Users/pragad/ItsMine/Dev_Git/LearnPython"

getdir_recurse(newpath)

def listfiles(path):

fullFilesList = [f for f in os.listdir(path) if os.path.isfile(os.path.join(path, f))]

filesList = [f for f in fullFilesList if not f.startswith('.')]

return filesList

print listfiles(newpath)