file-like Object:像open()函数返回的这种有个read()方法的对象,在Python中统称为file-like Object。除了file外,还可以是内存的字节流,网络流,自定义流等等。file-like Object不要求从特定类继承,只要写个read()方法就行。 StringIO就是在内存中创建的file-like Object,常用作临时缓冲。 • 写文件 调用open( ...
import os filename = '/Users/flavio/test.txt' print(os.path.getsize(filename)) print(os.path.getmtime(filename)) print(os.path.getctime(filename))os.stat() returns all the information you need in a concise way:import os filename = '/Users/flavio/test.txt' print(os.stat(filename)...
import os # Use the 'os.path.realpath(__file__)' to get the full path of the current Python script. # This will print the path of the current file. print("Current File Name: ", os.path.realpath(__file__)) Sample Output: Current File Name : /home/students/fb6e28e0-2425-11e7-...
# Gather other propertiesprint("Is a symlink: ", os.path.islink(file_path))print("Absolute Path: ", os.path.abspath(file_path))print("File exists: ", os.path.exists(file_path))print("Parent directory: ", os.path.dirname(file_path))print("Parent directory: {} | File name: {}"....
``` # Python script to check the status of a website import requests def check_website_status(url): response = requests.get(url) if response.status_code == 200: # Your code here to handle a successful response else: # Your code here to handle an unsuccessful response ``` 说明: 此...
path.getsize os.path.stat os.path.isabs os.path.supports_unicode_filenames os.path.isdir os.path.sys os.path.isfile os.path.walk os.path.islink os.path.warnings os.path.ismount 1、跟文件路径相关 basename():去文件路径基名 dirname():去文件路径目录名 join():将字符串连接起来 split()...
>>> test = 'test' >>> _a_ = 1 >>> 123c = 10 File "<stdin>", line 1 123c = 10 ^ SyntaxError: invalid syntax >>> 这里Python解释器返回了SyntaxError: invalid syntax这个无效语法的错误提示,告诉你123c为无效的变量名。这也是使用解释器来学习Python的优势,代码里出了任何问题你都能得到“即时...
a.异常基础 1)异常概念 1. 异常类型 Python 内置多种异常类型,常见的有: ZeroDivisionError:除零错误 TypeError:类型错误(如字符串与整数相加) FileNotFoundError:文件不存在 IndexError:索引越界 KeyError:字典键不存在 ValueError:值不符合预期(如int('abc')) ...
1.NameError变量名错误 点击返回目录 报错: >>> print a Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'a' is not defined 解决方案: 先要给a赋值。才能使用它。在实际编写代码过程中,报NameError错误时,查看该变量是否赋值,或者是否有大小写不一致错误,...
Write mode ('w'): This mode is used to write to a file. It will create a new file if the file does not exist, and overwrite the file if it does exist. Append mode ('a'): This mode is used to add new data to the end of an existing file (append to a file). If the file...