concat.py

from json import dumps as json_encode
from random import randint # micropython random does not have suffle
import time

# Note this is written for micropython, this is a test to see how different methods of merging strings preform
#  * it seems + is better for 2 small strings, but with more complex stuff it starts loosing ground to other methods
#  * based on results using a RP2040 PICO

def shuffle(arr):
        n = len(arr)
        for i in range(n):
                j = randint(0, n-1)
                element = arr.pop(j)
                arr.append(element)

json={# https://json.org/example.html
    "glossary": {
        "title": "example glossary",
        "GlossDiv": {
            "title": "S",
            "GlossList": {
                "GlossEntry": {
                    "ID": "SGML",
                    "SortAs": "SGML",
                    "GlossTerm": "Standard Generalized Markup Language",
                    "Acronym": "SGML",
                    "Abbrev": "ISO 8879:1986",
                    "GlossDef": {
                        "para": "A meta-markup language, used to create markup languages such as DocBook.",
                        "GlossSeeAlso": [
                            "GML",
                            "XML"
                        ]
                    },
                    "GlossSee": "markup"
                }
            }
        }
    }
}
json=json_encode(json)# yea PHP naming deal with it

def join():
        print(".join")
        avg=0
        for i in range(10):
                then=time.ticks_cpu()
                ''.join(['HTTP/1.0 200 OK\r\nContent-type: application/json\r\nContent-Length: ',str(len(json)),'\r\nCache-Control: no-cache\r\n\r\n',json])
                now=time.ticks_cpu()
                ticks=time.ticks_diff(now,then)
                print(ticks,"- Sample:",i+1)
                avg+=ticks
        print(avg/10,"- Average")

def plus():
        print("+ Operator")
        avg=0
        for i in range(10):
                then=time.ticks_cpu()
                'HTTP/1.0 200 OK\r\nContent-type: application/json\r\nContent-Length: '+str(len(json))+'\r\nCache-Control: no-cache\r\n\r\n'+json
                now=time.ticks_cpu()
                ticks=time.ticks_diff(now,then)
                print(ticks,"- Sample:",i+1)
                avg+=ticks
        print(avg/10,"- Average")

def dot_format():
        print(".format")
        avg=0
        for i in range(10):
                then=time.ticks_cpu()
                'HTTP/1.0 200 OK\r\nContent-type: application/json\r\nContent-Length: {}\r\nCache-Control: no-cache\r\n\r\n{}'.format(len(json),json)
                now=time.ticks_cpu()
                ticks=time.ticks_diff(now,then)
                print(ticks,"- Sample:",i+1)
                avg+=ticks
        print(avg/10,"- Average")

def fstring():
        print("fstring")
        avg=0
        for i in range(10):
                then=time.ticks_cpu()
                f'HTTP/1.0 200 OK\r\nContent-type: application/json\r\nContent-Length: {len(json)}\r\nCache-Control: no-cache\r\n\r\n{json}'
                now=time.ticks_cpu()
                ticks=time.ticks_diff(now,then)
                print(ticks,"- Sample:",i+1)
                avg+=ticks
        print(avg/10,"- Average")

def pct():
        print("% Operator")
        avg=0
        for i in range(10):
                then=time.ticks_cpu()
                'HTTP/1.0 200 OK\r\nContent-type: application/json\r\nContent-Length: %d\r\nCache-Control: no-cache\r\n\r\n%s' % (len(json), json)
                now=time.ticks_cpu()
                ticks=time.ticks_diff(now,then)
                print(ticks,"- Sample:",i+1)
                avg+=ticks
        print(avg/10,"- Average")

lst=[join, plus, dot_format, fstring, pct]
shuffle(lst)
for i in range(0,len(lst)):
        if i:
                print()
        lst[i]()