defread_file(file_path:str)->None:""" 读取文件并判断每一行是否为空 Args: file_path: 文件路径 """withopen(file_path,"r")asfile:line_num=1line=file.readline()whileline:ifis_line_empty(line):print(f"Line{line_num}is empty")else:print(f"Line{line_num}is not empty")line_num+=1l...
if x is not None是最好的写法,清晰,不会出现错误,以后坚持使用这种写法。 使用if not x这种写法的前提是:必须清楚x等于None, False, 空字符串"", 0, 空列表[], 空字典{}, 空元组()时对你的判断没有影响才行。 def_get_judge(x):ifxisnotNone:print(x)else:print('x is None')print('-'*20)...
String form:[1,2,3]Length:3Docstring:Built-inmutable sequence.If no argument is given,the constructor creates anewemptylist.The argument must be an iterableifspecified.In[3]:print?Docstring:print(value,...,sep=' ',end='\n',file=sys.stdout,flush=False)Prints the values to a stream,or ...
def detect_intent(project_id, session_id, text, language_code): ... response = session_client.detect_intent(session=session, query_input=query_input) print(response) ### <--- ADD THIS LINE return response.query_result.fulfillment_text 您将获得以下 JSON: 代码语言:javascript 代码运行次数:0 ...
This is not a line. This is a line. 1. 2. 这表明我们的代码实现了“python if not Line”的功能,能够正确判断是否为行。 总结 通过以上步骤,我们成功实现了“python if not Line”的功能,可以根据给定的条件判断是否为行。在实现过程中,我们使用了if语句和not运算符来进行条件判断,编写了相应的代码来实...
"" @abc.abstractmethod def pick(self): #③ """Remove item at random, returning it. This method should raise `LookupError` when the instance is empty. """ def loaded(self): #④ """Return `True` if there's at least 1 item, `False` otherwise.""" return bool(self.inspect()) #⑤...
getline – get a line from server socket [DA] Y - endcopy – synchronize client and server [DA] Y - locreate – create a large object in the database [LO] N 大对象相关操作。 getlo – build a large object from given oid [LO] N 大对象相关操作。 loimport – import a file to a...
File"<stdin>",line1,in<module> 4 TypeError:power()missing1requiredpositionalargument:'n' Python 的错误信息很明确:调用函数 power() 缺少了一个位置参数 n。 这个时候,默认参数就排上用场了。由于我们经常计算 x2,所以,完全可以把第二个参数 n 的默认值设定为 2: ...
To check if a string is empty using the equality operator, we can just compare the string with another empty string. If the result is True, the input string is empty. Otherwise not. input_string="" print("The input string is:",input_string) ...
definfo(title):print(title)print('module name:',__name__)print('parent process:',os.getppid())print('process id:',os.getpid())deff(name):info('function f')print('hello',name)if__name__=='__main__':info('main line')p=Process(target=f,args=('shouke',))p.start()p.join()...