Task: Eban numbers
Go: package main

import "fmt"

type Range struct {
    start, end uint64
    print      bool
}

func main() {
    rgs := []Range{
        {2, 1000, true},
        {1000, 4000, true},
        {2, 1e4, false},
        {2, 1e5, false},
        {2, 1e6, false},
        {2, 1e7, false},
        {2, 1e8, false},
        {2, 1e9, false},
    }
    for _, rg := range rgs {
        if rg.start == 2 {
            fmt.Printf("eban numbers up to and including %d:\n", rg.end)
        } else {
            fmt.Printf("eban numbers between %d and %d (inclusive):\n", rg.start, rg.end)
        }
        count := 0
        for i := rg.start; i <= rg.end; i += 2 {
            b := i / 1000000000
            r := i % 1000000000
            m := r / 1000000
            r = i % 1000000
            t := r / 1000
            r %= 1000
            if m >= 30 && m <= 66 {
                m %= 10
            }
            if t >= 30 && t <= 66 {
                t %= 10
            }
            if r >= 30 && r <= 66 {
                r %= 10
            }
            if b == 0 || b == 2 || b == 4 || b == 6 {             
                if m == 0 || m == 2 || m == 4 || m == 6 {
                    if t == 0 || t == 2 || t == 4 || t == 6 {
                        if r == 0 || r == 2 || r == 4 || r == 6 {
                            if rg.print {
                                fmt.Printf("%d ", i)
                            }
                            count++
                        }
                    }
                }
            }
        }
        if rg.print {
            fmt.Println()
        }
        fmt.Println("count =", count, "\n")
    }
}

Python: 



import inflect
import time

before = time.perf_counter()

p = inflect.engine()



print(' ')
print('eban numbers up to and including 1000:')
print(' ')

count = 0

for i in range(1,1001):
    if not 'e' in p.number_to_words(i):
        print(str(i)+' ',end='')
        count += 1
        
print(' ')
print(' ')
print('count = '+str(count))
print(' ')



print(' ')
print('eban numbers between 1000 and 4000 (inclusive):')
print(' ')

count = 0

for i in range(1000,4001):
    if not 'e' in p.number_to_words(i):
        print(str(i)+' ',end='')
        count += 1
        
print(' ')
print(' ')
print('count = '+str(count))
print(' ')



print(' ')
print('eban numbers up to and including 10000:')
print(' ')

count = 0

for i in range(1,10001):
    if not 'e' in p.number_to_words(i):
        count += 1
        
print(' ')
print('count = '+str(count))
print(' ')



print(' ')
print('eban numbers up to and including 100000:')
print(' ')

count = 0

for i in range(1,100001):
    if not 'e' in p.number_to_words(i):
        count += 1
        
print(' ')
print('count = '+str(count))
print(' ')



print(' ')
print('eban numbers up to and including 1000000:')
print(' ')

count = 0

for i in range(1,1000001):
    if not 'e' in p.number_to_words(i):
        count += 1
        
print(' ')
print('count = '+str(count))
print(' ')



print(' ')
print('eban numbers up to and including 10000000:')
print(' ')

count = 0

for i in range(1,10000001):
    if not 'e' in p.number_to_words(i):
        count += 1
        
print(' ')
print('count = '+str(count))
print(' ')

after = time.perf_counter()

print(" ")
print("Run time in seconds: "+str(after - before))