There are different ways to get file size in Python. We will be using the OS module and the module to check the file size. The module in Python comes as built-in, and it provides various utility methods to interact with operating system features. pathlib OS Get the file size in Python The popular ways to fetch file size in Python are as follows. os.path.getsize() os.stat() seek() and tell() path.stat().st_mode Method 1: Get file size using os.path.getsize() The function takes a file path as an argument and returns the file size in bytes. If the function cannot find the file or is inaccessible, Python will raise an . os.path.getsize() OSError # Import os module
import os

# set the file path
file = "python.pdf"

# Get the file size using os.path.getsize() function
file_size = os.path.getsize(file)

print('File Size in Bytes is ', file_size)
print('File Size in KiloBytes is ', (file_size / 1024))
print('File Size in MegaBytes is ', (file_size / (1024 * 1024))) Output File Size in Bytes is 12271318
File Size in KiloBytes is 11983.708984375
File Size in MegaBytes is 11.702840805053711 Method 2: Get file size using os.stat() The function takes a file path as an argument and returns the statistical details of the file as a tuple. The method will get the status of the specified file path, and the attribute will fetch the file size in bytes. os.stat() stat() st_size # Import os module
import os

# set the file path
file = "python.pdf"

#If you want to print the file info 
file_info= os.stat(file)
print(file_info)

# Get the file size using os.stat() function
file_size = os.stat(file).st_size

print('File Size in Bytes is ', file_size)
print('File Size in KiloBytes is ', (file_size / 1024))
print('File Size in MegaBytes is ', (file_size / (1024 * 1024))) Output os.stat_result(st_mode=33206, st_ino=12103423998770118, st_dev=3351013, st_nlink=1, st_uid=0, st_gid=0, st_size=12271318, st_atime=1632686420, st_mtime=1632608049, st_ctime=1632686420)
File Size in Bytes is 12271318
File Size in KiloBytes is 11983.708984375
File Size in MegaBytes is 11.702840805053711 Method 3: Get file size using seek() and tell() The other methods perfectly work in the case of an actual file, and if you have something like file-like objects, you could use and to fetch the file size. seek() tell() There are three steps involved to get the file size using the seek() and tell() method. Open the file using the function and store the return object into a variable. When the file is opened, the cursor always points to the beginning of the file. Step 1: open() File objects provide a method to set the cursor into the desired location. It accepts two arguments start position and the end position. To set the cursor at the end location of the file, use method _ ._ Step 2: seek() os.SEEK_END The file object has a method that can get the current cursor position and provides the number of bytes it has moved from the initial position. Basically, it gives the actual file size in bytes format. Step 3: tell() # Import os module
import os

# set the file path
file_name = "python.pdf"
 
# open file using open() function
file = open(file_name)
 
# set the cursor position to end of file
file.seek(0, os.SEEK_END)

# get the current position of cursor
# this will be equivalent to size of file
file_size= file.tell()
 

print('File Size in Bytes is ', file_size)
print('File Size in KiloBytes is ', (file_size / 1024))
print('File Size in MegaBytes is ', (file_size / (1024 * 1024))) Output File Size in Bytes is 12271318
File Size in KiloBytes is 11983.708984375
File Size in MegaBytes is 11.702840805053711 Method 4: Get file size using path.stat().st_mode The method of the Path object returns the properties of a file like , , etc. and, the attribute of the stat method returns the file size in bytes. stat() st_mode st_dev st_size # Import pathlib module
import pathlib

# set the file path
file = "python.pdf"

# Get the file size using pathlib.Path() function
file_size = pathlib.Path(file).stat().st_size

print('File Size in Bytes is ', file_size)
print('File Size in KiloBytes is ', (file_size / 1024))
print('File Size in MegaBytes is ', (file_size / (1024 * 1024))) Output File Size in Bytes is 12271318
File Size in KiloBytes is 11983.708984375
File Size in MegaBytes is 11.702840805053711 The module is available only from  **Python 3.4 and above ** versions. pathlib All the above methods provide the file size in bytes format. In most cases, if the file size is significant, you would need it in a human-readable format as kilobytes or megabytes. Python get file size in kb (KiloBytes) To convert from , divide the filesize bytes by 1024, as shown in the above examples. bytes to Kilobytes Python get file size in kb (MegaBytes) To convert from , divide the filesize bytes by (1024 x 1024) as shown in the above examples. bytes to Megabytes The post was also published on https://itsmycode.com/how-to-get-file-size-in-python/

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Python Tutorial: 4 Methods to Getting the File Size in Python

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Python Tutorial: 4 Methods to Getting the File Size in Python

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Srinivas Ramakrishna

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