Format

Example Python program Format.py Python version 3.x or newer. To check the Python version use:

python --version

Methods

• def stars(format, inp):
• def commas(inp):
• def dec(format, inp):
• def dollar(inp):
• def sDollar(inp):
• def exp(format, inp):

Code

Python example

def stars(format, inp):
    starct = 0
    for c in format:
        if c == '&':
            starct += 1
    numct = 0
    for c in inp:
        if not c == '.':
            numct += 1
    if starct < numct:
        print("more digits than stars")
    return '*' * (starct-numct) + inp
def commas(inp):
    #for i in range(inp.find('.')-3,0, -3): #insert comma before each of these chars at these indices
    for i in range(len(inp)-3,0, -3):
        inp = inp[0:i] + ',' + inp[i:]
    return inp

def dec(format, inp):
    decplace = len(format[format.find('.')+1:])
    print(decplace)
    decLoc = inp.find('.')
    if not decLoc == -1:
        currPlaces = len(inp[decLoc + 1:])
    else:
        decLoc = len(inp)
        inp = inp + '.'
        currPlaces = 0
    print(currPlaces)
    if(currPlaces <= decplace):
        inp = inp + '0' * (decplace-currPlaces)
    else:
        #print(inp)
        if((int(inp[decLoc + decplace + 1])) >= 5):
            inp = inp[:decLoc + decplace] + (str(int(inp[decLoc + decplace]) + 1))
        else:
            inp = inp[:decLoc + decplace+1]
    return (inp)
def dollar(inp):
    lastStarI = inp.rfind('*')
    return '$' + inp[lastStarI + 1:]
def sDollar(inp):
    lastStarI = inp.rfind('*')
    return inp[:lastStarI + 1] + '$' + inp[lastStarI +1:]
def exp(format, inp):
    oldlen = len(inp)
    if not inp.find('.') == -1:
        oldlen = len(inp[:inp.find('.')])
        inp = inp[:inp.find('.')] + inp[inp.find('.') + 1:]
    space = 0
    for c in format:
        if c == '&':
            space += 1 
    print(space)
    if space < len(inp) and int(inp[space]) >= 5: #then round
        inp = inp[:space - 1] + str(int(inp[space-1])+1)
    elif space < len(inp) and int(inp[space]) < 5:
        inp = inp[:space]
    elif space > len(inp):
        inp = inp + '0' * (space-len(inp))
    inp = inp[:1] + '.' + inp[1:] + 'E' + str(oldlen - 1)
    return inp

st = "&&&&E, 124353"
format, inp = st.rstrip().split(", ")[0], st.rstrip().split(", ")[1]
print(format)
if(format[-1]=='E'):
    inp = exp(format, inp)
#print(inp)
else:
    if not format.find('.') == -1:
        inp = dec(format, inp)
    #print(inp)
    inp = stars(format,inp)
    #print(inp)
    if not format.find(',') == -1:
        inp = commas(inp)
    #print(inp)
    if format[0] == '$':
        inp = dollar(inp)
    #print(inp)
    if format[0] == '*':
        inp = sDollar(inp)
    #print(inp)
print(inp)

Useful Links

• Articles: https://python-commandments.org/
• Python shell: https://bsdnerds.org/learn-python/
• Tutorial: https://pythonprogramminglanguage.com/