python - python中文件大小不正确

Question

import os

def create_python_script(filename):
    comments = "# Start of a new Python Program"
    #filesize = 0
    with open(filename, 'w') as new_file:
        new_file.write(comments)
        cwd=os.getcwd()
        fpath = os.path.abspath(filename)
        filesize=os.path.getsize(fpath)
    return(filesize)

print(create_python_script('newprogram.py'))

我得到的结果为零，但它应该得到“31”

Answer 1

在尝试获取文件大小之前，您没有关闭文件，就像在 with block 中执行的那样。把它带到外面:

import os

def create_python_script(filename):
    comments = "# Start of a new Python Program"
    #filesize = 0
    with open(filename, 'w') as new_file:
        new_file.write(comments)
        cwd=os.getcwd()
        fpath = os.path.abspath(filename)
        print(fpath)

    filesize=os.path.getsize(fpath)
    return(filesize)

print(create_python_script('newprogram.py'))
# 31