Tip3_os_sys_time.py

# Check out my Youtube channel:
# https://www.youtube.com/channel/UCRYxPJle46XMws4ewJE-ShQ

# Check whether a file path is a file or a directory
import os
path = "abc.txt"
if os.path.isdir(path):
    print("\nIt is a directory")
elif os.path.isfile(path):
    print("\nIt is a normal file")
else:
    print("It is a special file (socket, FIFO, device file)")
print()

# Get File Size
import os
file_size = os.path.getsize("abc.txt")
print("\nThe size of abc.txt is :", file_size, "Bytes")
print()

# Get the size of an object in bytes
import sys
str1 = "one"
str2 = "four"
str3 = "three"
print()
print(f"Memory size of '{str1}' = {sys.getsizeof(str1)} bytes")
print(f"Memory size of '{str2}' = {sys.getsizeof(str2)} bytes")
print(f"Memory size of '{str3}' = {sys.getsizeof(str3)} bytes")
print()

# Determine the largest and smallest integers, longs, floats
import sys
print("Float value information: ",sys.float_info)
print("\nInteger value information: ",sys.int_info)
print("\nMaximum size of an integer: ",sys.maxsize)

# Get the system time
# Note : The system time is important for debugging,
# network information, random number seeds, or something as simple as program performance.
import time
print()
print(time.ctime())
print()

# Get the name of the host on which the routine is running
import socket
host_name = socket.gethostname()
print()
print("Host name:", host_name)
print()

# List files
import os, time
from datetime import datetime
list_of_files = os.listdir(os.getcwd())
list_of_files.sort(key=os.path.getctime)
list_of_times = [datetime.strptime(time.ctime(os.path.getctime(a)), "%a %b %d %H:%M:%S %Y") for a in list_of_files]
for name, time in zip(list_of_files, list_of_times):
    print(f'{name}: {time.strftime("%A %d %B %Y - %H:%M:%S")}')

# Get the details of math module
import math
math_ls = dir(math)
print(math_ls)

# Find the available built-in modules
import sys
import textwrap
module_name = ', '.join(sorted(sys.builtin_module_names))
print(textwrap.fill(module_name, width=60))

# Get a list of locally installed Python modules
import pkg_resources
installed_packages = pkg_resources.working_set
installed_packages_list = sorted(["%s==%s" % (i.key, i.version) for i in installed_packages])
for m in installed_packages_list:
    print(m)