import
requests
from
bs4
import
BeautifulSoup
from
beeprint
import
pp
import
time
from
colorama
import
init
from
colorama
import
Fore
,
Style
import
pyfiglet
import
os
os
.
system
(
'cls'
if
os
.
name
==
'nt'
else
'clear'
)
#initing colorama
init
(
)
#making a class to make interaction between the front-end and back-end easier
#coding the back-end
class
Converter
:
#setting up
def
__init__
(
self
)
:
#defining the base url of the request
self
.
base_url
=
"https://pokur.su/{}/{}/{}/"
#defining where we will get the current currencies from
self
.
iso_url
=
"https://pokur.su/eur/usd/1/"
#headers - i added them early on vut they have trurned out to be useless
self
.
headers
=
{
"Accept"
:
"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"
,
"Accept-Encoding"
:
"gzip, deflate, br"
,
"Accept-Language"
:
"en-US,en;q=0.5"
,
"Cache-Control"
:
"max-age=0"
,
"Connection"
:
"keep-alive"
,
"User-Agent"
:
"Mozilla/5.0 (X11; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0"
}
#getting all the existing currencies
def
fetch_iso
(
self
)
:
#defining the dict we will save stuff to
currencies
=
{
}
#requesting the html of the page
iso_request
=
requests
.
get
(
self
.
iso_url
)
#parsing with bs4
iso_soup
=
BeautifulSoup
(
iso_request
.
text
,
"html.parser"
)
#finding the iso name containers
iso_body
=
iso_soup
.
find
(
class_
=
"dropdown-menu dropdown-menu-right"
)
.
findChildren
(
"li"
)
#cycling through all the containers and extracting the iso (USD) and the name (American Dollar)
#we also save it to a dictionary
for
iso_container
in
iso_body
:
iso_container_children
=
iso_container
.
findChildren
(
)
#fetching the iso
iso_3
=
iso_container_children
[
1
]
.
text
#fetching the name
iso_name
=
iso_container_children
[
2
]
.
text
#adding them to the dictionary
currencies
[
iso_3
]
=
iso_name
return
currencies
#the heart of the program - converting stuff with the base_url get method
def
convert_currency
(
self
,
from_
,
to
,
amount
)
:
#we add our varibales to the base url
target_url
=
self
.
base_url
.
format
(
from_
,
to
,
amount
)
#we make a request
currency_request
=
requests
.
get
(
target_url
)
currency_soup
=
BeautifulSoup
(
currency_request
.
text
,
"html.parser"
)
#doing some bring html stuff... just finding the response
response_amount
=
currency_soup
.
find
(
class_
=
"blockquote-classic"
)
.
findChild
(
"p"
)
.
text
        response_amount
=
response_amount
.
replace
(
"  "
,
" "
)
response_amount
=
response_amount
.
replace
(
"по курсу на"
,
"on the"
)
with
open
(
"conversion_logs.txt"
,
"a"
)
as
file
:
file
.
write
(
response_amount
+
"\n"
)
#bam! just like that
return
response_amount
#returns the previous conversions the user has made
def
prev_logs
(
self
)
:
final_string
=
""
try
:
with
open
(
"conversion_logs.txt"
,
"r"
)
as
file
:
logs
=
file
.
readlines
(
)
for
line
in
range
(
len
(
logs
)
)
:
#adding the conversion to the string that will be shown at the end
final_string
=
Fore
.
CYAN
+
str
(
line
+
1
)
+
Style
.
RESET_ALL
+
". "
+
logs
[
line
]
+
"\n"
+
final_string
#checking if we even have any logs
except
FileNotFoundError
:
final_string
=
"You have no logs :(\nTry making some conversions!"
return
final_string
#making the frontend
class
app
:
def
__init__
(
self
)
:
#starting the app
self
.
cnvrt
=
Converter
(
)
self
.
__version__
=
"0.0.2"
#the heart of our app
def
main_menu
(
self
)
:
#making a fancy banner
ascii_banner
=
pyfiglet
.
figlet_format
(
"Currency Converter "
+
self
.
__version__
)
#waiting for the user to enter a valid input
while
True
:
print
(
Fore
.
CYAN
,
ascii_banner
)
print
(
Fore
.
YELLOW
+
"Main Menu"
)
print
(
Fore
.
RED
+
"-"
*
10
)
print
(
Fore
.
CYAN
+
"1"
+
Style
.
RESET_ALL
+
". Make a conversion"
)
print
(
Fore
.
CYAN
+
"2"
+
Style
.
RESET_ALL
+
". View previous conversions"
)
print
(
)
#fancy input
option
=
input
(
Fore
.
GREEN
+
"["
+
Fore
.
YELLOW
+
"Main Menu"
+
Fore
.
GREEN
+
"]"
+
Fore
.
CYAN
+
":$ "
+
Style
.
RESET_ALL
)
self
.
clear
(
)
if
"1"
in
option
:
self
.
make_conversion
(
)
elif
"2"
in
option
:
self
.
see_logs
(
)
def
see_logs
(
self
)
:
ascii_banner
=
pyfiglet
.
figlet_format
(
"Currency Converter "
+
self
.
__version__
)
#just opening up a file and printing it out... see Convert.prev_logs()
print
(
Fore
.
CYAN
,
ascii_banner
)
print
(
Fore
.
YELLOW
+
"Previous Logs"
)
print
(
Fore
.
RED
+
"-"
*
10
)
print
(
Style
.
RESET_ALL
+
self
.
cnvrt
.
prev_logs
(
)
)
print
(
)
option
=
input
(
Fore
.
GREEN
+
"{"
+
Fore
.
RED
+
"Press Enter To Continue"
+
Fore
.
GREEN
+
"}"
+
Style
.
RESET_ALL
+
Fore
.
GREEN
+
"["
+
Fore
.
YELLOW
+
"Previous Logs"
+
Fore
.
GREEN
+
"]"
+
Fore
.
CYAN
+
":$ "
+
Style
.
RESET_ALL
)
self
.
clear
(
)
def
make_conversion
(
self
)
:
#getting the existing isos. see Convert.fetch_iso()
#banner
ascii_banner
=
pyfiglet
.
figlet_format
(
"Currency Converter "
+
self
.
__version__
)
isos
=
self
.
cnvrt
.
fetch_iso
(
)
while
True
:
print
(
Fore
.
CYAN
,
ascii_banner
)
print
(
Fore
.
YELLOW
+
"Currency Converter"
)
print
(
Fore
.
RED
+
"-"
*
10
)
print
(
Fore
.
YELLOW
+
"Please choose a currency you would like to convert"
+
Fore
.
GREEN
+
" from"
+
Style
.
RESET_ALL
)
print
(
Fore
.
RED
+
"THIS IS CASE SENSITIVE!"
)
print
(
)
isos
=
self
.
cnvrt
.
fetch_iso
(
)
for
i
in
isos
:
#printing out the isos
print
(
Fore
.
CYAN
+
i
+
Style
.
RESET_ALL
+
" - "
+
isos
[
i
]
)
print
(
)
option
=
input
(
Fore
.
GREEN
+
"["
+
Fore
.
YELLOW
+
"Currency Converter"
+
Fore
.
GREEN
+
"]"
+
Fore
.
CYAN
+
":$ "
+
Style
.
RESET_ALL
)
self
.
clear
(
)
if
option
in
isos
:
#validating input
from_conversion
=
option
.
lower
(
)
break
while
True
:
print
(
Fore
.
CYAN
,
ascii_banner
)
print
(
Fore
.
YELLOW
+
"Currency Converter"
)
print
(
Fore
.
RED
+
"-"
*
10
)
print
(
Fore
.
YELLOW
+
"Please choose a currency you would like to convert"
+
Fore
.
GREEN
+
" to"
+
Style
.
RESET_ALL
)
print
(
Fore
.
RED
+
"THIS IS CASE SENSITIVE!"
)
print
(
)
isos
=
self
.
cnvrt
.
fetch_iso
(
)
for
i
in
isos
:
print
(
Fore
.
CYAN
+
i
+
Style
.
RESET_ALL
+
" - "
+
isos
[
i
]
)
print
(
)
option
=
input
(
Fore
.
GREEN
+
"["
+
Fore
.
YELLOW
+
"Currency Converter"
+
Fore
.
GREEN
+
"]"
+
Fore
.
CYAN
+
":$ "
+
Style
.
RESET_ALL
)
self
.
clear
(
)
if
option
in
isos
:
to_conversion
=
option
.
lower
(
)
break
while
True
:
try
:
print
(
Fore
.
CYAN
,
ascii_banner
)
print
(
Fore
.
YELLOW
+
"Currency Converter"
)
print
(
Fore
.
RED
+
"-"
*
10
)
print
(
Fore
.
YELLOW
+
"Please choose how much money you would like to convert"
+
Style
.
RESET_ALL
)
print
(
Fore
.
RED
+
"THIS MUST BE A NUMBER SUCH AS 23 BUT NOT A DECIMAL SUCH AS 89.50"
)
print
(
)
print
(
Fore
.
GREEN
+
"From: "
+
Style
.
RESET_ALL
+
from_conversion
)
print
(
Fore
.
GREEN
+
"to: "
+
Style
.
RESET_ALL
+
to_conversion
)
print
(
Fore
.
GREEN
+
"Amount: "
+
Style
.
RESET_ALL
+
"?"
)
print
(
)
option
=
input
(
Fore
.
GREEN
+
"["
+
Fore
.
YELLOW
+
"Currency Converter"
+
Fore
.
GREEN
+
"]"
+
Fore
.
CYAN
+
":$ "
+
Style
.
RESET_ALL
)
self
.
clear
(
)
amount_conversion
=
int
(
option
)
break
#if the input is not a number, ValueError will be raised and the screen will be cleared
except
ValueError
:
self
.
clear
(
)
print
(
Fore
.
CYAN
,
ascii_banner
)
print
(
Fore
.
YELLOW
+
"Currency Converter"
)
print
(
Fore
.
RED
+
"-"
*
10
)
print
(
)
print
(
Fore
.
GREEN
+
self
.
cnvrt
.
convert_currency
(
from_conversion
,
to_conversion
,
amount_conversion
)
)
print
(
)
option
=
input
(
Fore
.
GREEN
+
"{"
+
Fore
.
RED
+
"Press Enter To Continue"
+
Fore
.
GREEN
+
"}"
+
Style
.
RESET_ALL
+
Fore
.
GREEN
+
"["
+
Fore
.
YELLOW
+
"Currency Converter"
+
Fore
.
GREEN
+
"]"
+
Fore
.
CYAN
+
":$ "
+
Style
.
RESET_ALL
)
self
.
clear
(
)
def
clear
(
self
)
:
os
.
system
(
'cls'
if
os
.
name
==
'nt'
else
'clear'
)
if
__name__
==
"__main__"
:
app
=
app
(
)
app
.
main_menu
(
)