这是因为read()到达文件末尾时返回了一个空字符串,显示出来就是一个空行。要删除这个空行,可以调用python内置函数rstrip()实现。 rstrip()用于删除字符串末尾的指定字符,默认为空格。 代码示例: with open("test.txt") as file: whole_content=file.read() whole_content=whole_content.rstrip() print(whole_con...
文件读操作可以的函数有read(), 这个是读取整个文件, 还有readlines()这个是一行行的进行读取并保存到列表中。 下面直接上代码: import os def read_file(filename): if os.path.exists(filename) is False: raise FileNotFoundError('%s not exists' % (filename,)) f = open(filename, encoding='utf-...
We open theworks.txtfile in the read mode. Since we did not specify the binary mode, the file is opened in the default text mode. It returns the file objectf. Thewithstatement simplifies exception handling by encapsulating common preparation and cleanup tasks. It also automatically closes the ...
data = file_object.read(chunk_size) if not data: break yield data with open('really_big_file.dat') as f: for piece in read_in_chunks(f): process_data(piece) 另外一种方法是用iter和一个helper function: f = open('really_big_file.dat') def read1k(): return f.read(1024) for pie...
# memory-map the file, size 0 means whole file map = mmap.mmap(f.fileno(), length=0, access=mmap.ACCESS_READ) count = 0 while map.readline(): count += 1 print(count) map.close() print(time.time() - start) 输出: 5000
all_the_text = open('thefile.txt').read()#文本文件中的所有文本all_the_text = open('thefile.txt','rb').read()#二进制文件中的所有数据 为了安全,最好给打开的文件指定一个名字 例如 file_object = open('thefile.txt')#使用try/finally 语句是为了保证文件对象即使在读取中发生错误也可以被关闭...
all_the_text = open('thefile.txt').read()#文本文件中的所有文本all_the_text = open('thefile.txt','rb').read()#二进制文件中的所有数据 为了安全,最好给打开的文件指定一个名字 例如 file_object = open('thefile.txt')#使用try/finally 语句是为了保证文件对象即使在读取中发生错误也可以被关闭...
But notice, that accessing files relative to your program is impacted, make sure to read the section Onefile: Finding files as well. # Create a binary that unpacks into a temporary folder python -m nuitka --onefile program.py Note There are more platform-specific options, e.g. related to...
First things first, let's getcode styleout of the way. Make sure you've read and memorizedPEP8(code style,more readable version here) andPEP257(docstring style). Those two code styles are applied by almost all major Python applications and libraries. Use flake8, pydocstyle and black to ...
Open a file on a different location: f =open("D:\\myfiles\welcome.txt","r") print(f.read()) Run Example » Read Only Parts of the File By default theread()method returns the whole text, but you can also specify how many characters you want to return: ...