我们可以根据查询结果判断用户是否存在。 result=cursor.fetchone()# 获取查询结果的第一条记录ifresult:print(f"User{username_to_check}exists in the database.")# 用户存在else:print(f"User{username_to_check}does not exist in the database.")# 用户不存在 1. 2. 3. 4. 5. 8. 关闭游标和连接 ...
importosdefifexists(path):returnos.path.exists(path)# 判断文件是否存在file_path='data.txt'ififexists(file_path):print("文件存在")else:print("文件不存在")# 判断目录是否存在dir_path='data'ififexists(dir_path):print("目录存在")else:print("目录不存在") 1. 2. 3. 4. 5. 6. 7. 8. ...
'''Check if directory exists, if not, create it'''importos# You should change 'test' to your preferred folder.MYDIR = ("test") CHECK_FOLDER = os.path.isdir(MYDIR)# If folder doesn't exist, then create it.ifnotCHECK_FOLDER: os.makedirs(MYDIR)print("created folder : ", MYDIR)el...
Checking if a File Exists This is arguably the easiest way to check if both a file existsandif it is a file. importos os.path.isfile('./file.txt')# Trueos.path.isfile('./link.txt')# Trueos.path.isfile('./fake.txt')# Falseos.path.isfile('./dir')# Falseos.path.isfile('....
Now you can use the different methods is_file(), is_dir(), and exists() on the Path object:if my_file.is_file(): # file exists if my_file.is_dir(): # directory exists if my_file.exists(): # file or directory exists
1. Python: Check if directory exists using os.path.exists() function os.path.exists()helps check if a specified path exists or not. It returns true if the path is a file, directory, or any other file that contains a reference to another file. ...
The p.exists() call is redundant since p.is_dir() returns False for nonexistent paths, but checking both would allow you to e.g. give better error messages. EDIT: Note that pathlib was added in Python 3.4. If you're still using an old version for whatever reason, you can use the ...
You can use theos.pathmodule’sexists()function to check if a file exists in Python. Here’s a simple example: import os print(os.path.exists('your_file.txt')) # Output: # True if the file exists, False otherwise. In this example, we’re importing theosmodule and using theexists()fu...
Bug report The following code works fine with Python 3.8 and 3.9 but starts failing with Python 3.10. It seems that zipfile.Path creates an entry in the zipfile.ZipFile object that does not exist in the underlying file and therefore make...
Check if drive exists, If not map Check if Email address exists in Office 365 and if exists, Create a Unique Email address Check if event log source exists for non admins Check if file created today and not 0 KB Check if HyperThreading is enabled Check if IIS running on a remote serve...