在这个ER图中,我们可以看到字节流(BYTE_STREAM)与文件(FILE)和Socket(SOCKET)之间的关系。 ByteStream+byteArray data+int length+decode()FileReader+string filePath+readBytes()SocketReader+string host+int port+readBytes() 在上面的类图中,我们定义了字节流类(ByteStream)以及文件读取类(FileReader)和Socket读取...
首先,我们将创建一个文件对象,并使用open()函数以阅读模式打开所需的文本文件。然后,我们将read()函...
2. 使用io.StringIO读取字符串 除了读取文本文件,我们还可以使用io.StringIO模块读取字符串。io.StringIO模块提供了StringIO类,可以模拟文件对象的行为,使我们可以像读取文件一样读取字符串。下面是一个示例代码: fromioimportStringIO content="Hello, World!"file=StringIO(content)data=file.read()print(data) 1...
str= fo.read(10);print"Read String is :", str#查找当前位置position =fo.tell();print"Current file position :", position#把指针再次重新定位到文件开头position =fo.seek(0, 0); str= fo.read(10);print"Again read String is :", str#关闭打开的文件fo.close() 结果: Read Stringis: Pythoni...
This way, we can use theread() functiontoread Python text files into strings. Method 2: How to read File as String in Python using the readline() Method Thereadline()method in Python reads one line at a time from the file in Python. If called again, it reads the next line, and so...
file.read(1) if (next == '/'): break return "IGNORE" else: return "SYMBOL" return "SYMBOL" elif (self.current == " " or self.current == "\n"): return "IGNORE" elif (self.current == "'"): while(next != "'"): self.current = self.current + next return "STRING_CONST" ...
file_path = 'pi_digits.txt' with open(file_path) as file_object: content = file_object.read() print(content.rstrip()) 3.1415926535 8979323846 2643383279 复习:strip()、lstrip()、rstrip(),可以含有一个字符类型的参数,缺省默认为空格; strip():删除string字符串开头和末尾的指定字符, ...
if my_test_file: my_test_file.close() # 打开文件:第二种写法 with open('io_test.txt', 'r') as f: # print('f:', f.read() + '\t \t') lines = f.readlines() for index, line in enumerate(lines): print('第{0}行:{1}'.format(index, line)) ...
可见,file类的__exit__()方法的返回值为None,None的真值测试结果为False,因此用于文件读写的with语句代码块中的异常信息还是会被抛出来,需要我们自己去捕获并处理。 代码语言:javascript 复制 with open('song.txt', 'r', encoding='utf-8') as f: print(f.read()) num = 10 / 0 输出结果: 代码语言...
return"STRING_CONST" elif(type(self.current)==int): next=self.file.read(1) while(next!=" "): self.current=self.current+next return"INT_CONST" else: next=self.file.read(1) while(next!=" "andnext!=""): self.current=self.current+next ...