num = int(data) except (FileNotFoundError, ValueError) as e: print(f"发生错误:{e}") 1. 2. 3. 4. 5. 6. 3. 通用异常捕获 try: # 复杂操作 result = some_function() except Exception as e: print(f"发生未知错误:{e}") # 建议记录详细错误日志 import traceback print(traceback.format...
pipelines.py主要负责图片的下载,我们根据item保存的信息,进行图片的分类保存,代码如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # -*- coding: utf-8 -*- # Define your item pipelines here # # Don't forget to add your pipeline to the ITEM_PIPELINES setting # See: http://doc.scrapy...
:return: value(M*N矩阵),key不存在,返回None """# value = None# if self.conn_redis.exists(key):value=self.conn_redis.get(key)value=self.bytes_to_array(value)returnvaluedefset(self,key,item):""" 新信息写入redis :param key: *** :param item:*** """b_value=self.array_to_bytes(it...
print(f"是否为目录: {os.path.isdir(dir_path)}") # True print(f"是否存在: {os.path.exists(file_path)}") # True print(f"是否为符号链接: {os.path.islink('link.txt')}") # 检查符号链接 1. 2. 3. 4. 5. 6. 7. 8. 9. 3. 使用pathlib检查文件类型 from pathlib import Path file...
[:port] # http://hostname[:port] # 2) Do not add a trailing slash at the end of file server path. FILE_SERVER = 'sftp://sftpuser:Pwd123@10.1.3.2' # Remote file paths: # 1) The path may include directory name and file name. # 2) If file name is not specified, indicate ...
{f:18}',end='' if i%5 else '\n') factorize nbytes between to_list str argsort rdivmod argmax tolist item is_monotonic_increasingdt autocorr is_monotonic_decreasingview repeat name array map dtype divmod to_frame unique ravel searchsorted hasnans is_unique is_monotonic cat argmin >>>...
(uri, req_data) if ops_return_result(ret) or rsp_data == '': logging.error('Failed to get file list') return file_list rsp_data1=rsp_data.replace('<?xml version="1.0" encoding="UTF-8"?>','') rsp_data1=rsp_data1.replace('xmlns="urn:huawei:yang:huawei-file-operation"',''...
In [1]: # 定义一个列表,列表虽然可以存不同类型,一般我们把相同类型的值存列表里面 infos_list=["C#","JavaScript"]#定一个空列表 list=[] In [2]: # for遍历 for item in infos_list: print(item) C# JavaScript In [3]: # while遍历 i=0 while i<len(infos_list): print(infos_list[i]...
git stash = shelve = stage = git add,是把改动放到staging(做snapshot),然后可以只commit这部分的改动 Save changes to branch A. Rungit stash. Check out branch B. Fix the bug in branch B. Commit and (optionally) push to remote. Check out branch A ...
add()方法改变了这个对象的状态。由于这种状态改变,我们需要提供更复杂的示例,展示Summary类的实例的行为方式。 如何做... 我们将在这个示例中展示两种变化。第一种是用于大部分无状态操作,比如计算binom()函数。第二种是用于有状态操作,比如Summary类。