24 — Python packages: the standard library and installed libraries

Python ships with many ready-made packages. Because advanced NME is ordinary Python, any of them is available inside a .nme file — that is the third syntax level. The example examples/birthday.nme uses the datetime package to count down to a birthday. Its Korean twin, examples/birthday.ko.nme, uses Korean beginner spellings over the same calculation.

#Steps

1. Import the part of the package you need with a Python import line:

   # part of examples/birthday.nme
   from datetime import date
   
   today = date.today()
   show today.year
   

   copyrun it →

   date now works like any value: date(2026, 12, 25) builds a date and today.year reads the year.

2. Ask for input with beginner syntax and combine it with the package:

   # part of examples/birthday.nme
   ask month, "your birth month (1-12): "
   ask day, "your birth day (1-31): "
   
   today = date.today()
   this_year = date(today.year, int(month), int(day))
   
   if this_year < today:
       this_year = date(today.year + 1, int(month), int(day))
   
   show "your next birthday is in " + str((this_year - today).days) + " days"
   

   copyrun it →

   Run it and answer with your birth month and day:

   nme run birthday
   

   copy

   The number changes with today's date and your answers:

   your next birthday is in <number> days
   

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3. Other standard packages work the same way. statistics can average a list, collections can count things, and json (already used by the use file module) reads and writes data.

4. Third-party libraries are installed with NME's package command, a small wrapper around Python's pip. It chooses the usual Python command for your operating system and installs one package at a time:

   nme install requests
   

   copy

   The Korean command form is equivalent:

   nme 설치 requests
   

   copy

   The command needs internet access. If pip fails, NME reports E9025; check the package name, your connection, and that pip is installed before trying again. After a successful install, import the package the same way:

   import requests
   

   copyrun it →

   An installed package is used exactly like a standard one. Package installation is not part of this offline compiler.

#Try it yourself

Change birthday.nme to count down to a favorite holiday instead of a birthday, or print the weekday of a date with date(2026, 12, 25).strftime("%A").

#What you learned

• from datetime import date brings a package name into your program.
• The standard library is always available inside NME.
• Beginner ask and Python package calls mix freely on one file.
• nme install / nme 설치 wraps pip, then third-party packages import the same way.