if path.exists(PATH) and path.isfile(PATH) and access(PATH, R_OK): print "File exists and is readable" else: print "Either file is missing or is not readable" 你也可以通过下面的方式实现: 代码如下: def file_exists(filename): try: with open(filename) as f: return True except IOEr...
importosimportstatimportshutildeferrorRemoveReadonly(func,path,exc):excvalue=exc[1]iffuncin(os.rmdir,os.remove)andexcvalue.errno==errno.EACCES:# change the file to be readable,writable,executable: 0777os.chmod(path,stat.S_IRWXU|stat.S_IRWXG|stat.S_IRWXO)# retryfunc(path)else:# raiseenter ...
using System;publicclassHappyProgram{publicstaticvoidMain(){ Console.WriteLine("Enter a number: ");intYourNumber=Convert.ToInt16(Console.ReadLine());if(YourNumber >10) Console.WriteLine("Your number is greater than ten");if(YourNumber <=10) Console.WriteLine("Your number is ten or smaller")...
The tests written in Doctest are often very readable since they are presented in a natural language format within the docstrings. Doctest allows you to embed tests directly in the documentation, making it easy to combine code examples and test cases in one place. Limitations of Doctest Framework...
outputFilename = 'frankenstein.encrypted.txt' myKey = 10 myMode = 'encrypt' # Set to 'encrypt' or 'decrypt'. # If the input file does not exist, the program terminates early: if not os.path.exists(inputFilename): print('The file %s does not exist. Quitting...' % (inputFilename...
Combine PEP-8 with The Zen of Python (also a PEP - PEP-20), and you’ll have a perfect foundation to create readable and maintainable code. Add Design Patterns and you are ready to create every kind of software system with consistency and evolvability. ...
# Interpret permissions in a human-readable formatpermissions =""permissions +="r"iffile_stat.st_mode & stat.S_IRUSRelse"-"permissions +="w"iffile_stat.st_mode & stat.S_IWUSRelse"-"permissions +="x"iffile_stat.st_mode & stat.S_IXUSRelse"-"permissions +="r"iffile_stat.st_mode &...
‘ab+’ –Open a file for appending and read-only mode in the binary format. Example 1: fo = open(“C:/Documents/Python/test.txt”, “r+”) In the above example, we are opening the file named ‘test.txt’ present at the location ‘C:/Documents/Python/’ and we are opening the...
if (dir.exists("my_test_folder")) { print("The direcoty exists") } else { print("The file does not exist") } We get: [1] "The direcoty exists" Now, let’s do the following exercise. We will check if the directory exists and if not, then we will create a new one. ...
C:\home\chardet> python test.py tests\*\* Traceback (most recent call last): File "test.py", line 1, in <module> from chardet.universaldetector import UniversalDetector File "C:\home\chardet\chardet\universaldetector.py", line 51 self.done = constants.False ^ SyntaxError: invalid syntax...