In [ ]:
Note: maybe you should determine length of "longest" fname and lname,
say max_fname and then format the the fname column in max_fname+1 spaces
Similarly for lname
 
col1: max_fname + 1
col2: max_lname + 1
col3: 18 + 1 = 19
col4: 9 + 1 = 10
col5: 19
col6: 10
col7: 8


january
february
march
april
may
june
july
august
september 9
october
november
december


print("{:(max_fname+1)s}{:(max_fname+1)s}{:19s}{:10s}{:19s}{:10s}{:8d}".format(a,b,c,d,e,f,g))
In [ ]:
a = "Srinivasa"
b = "Ramanujan"
c = "22 December, 1887"
d = "Thursday"
e = "26 April, 1920"
f = "Monday"
g = 11813
In [ ]:
max_fname = 9
max_lname = 11
In [ ]:
print("{:10s}{:12s}{:19s}{:10s}{:19s}{:10s}{:8d}".format(a,b,c,d,e,f,g))

Srinivasa Ramanujan   22 December, 1887  Thursday  26 April, 1920     Monday       11813
In [ ]:
print(f"%{max_fname}s %{max_lname}s %18s %9s %18s %9s %8d" % (a,b,c,d,e,f,g))

Srinivasa   Ramanujan  22 December, 1887  Thursday     26 April, 1920    Monday    11813
In [ ]:
print(a,end="")
print(" "*(max_fname + 1 - len(a)),end="")

print(b,end="")
print(" "*(max_lname + 1 - len(b)),end="")

print("{:19s}{:10s}{:19s}{:10s}{:8d}".format(c,d,e,f,g))

Srinivasa Ramanujan   22 December, 1887  Thursday  26 April, 1920     Monday       11813
In [ ]:
"aa"*5
Out[ ]:
'aaaaaaaaaa'
In [ ]:
print(f'%{max_fname}s %{max_lname}s %18s %9s %18s %9s %8d' % (a,b,c,d,e,f,g))

Srinivasa   Ramanujan  22 December, 1887  Thursday     26 April, 1920    Monday    11813
In [ ]:
class Date:
	# Constructor
	def __init__(self, m, d, y):
		self.month = m
		self.day = d
		self.year = y

	def __str__(self):
		return str(self.month)
In [ ]:
fname = "p1.dat"

with open(fname) as f:
    data = f.read().splitlines()
celebrities = []
for d in data: # d = 'Albert:Einstein:3/14/1879:4/18/1955'
    xs = d.split(":")  # xs = ['Albert','Einstein','3/14/1879','4/18/1955']
    ys = xs[2].split("/") # ys = ['3','14','1879']
    dob = Date(int(ys[0]),int(ys[1]),int(ys[2]))
    if xs[3] == "":
        dod = None
    else:
        ys = xs[3].split("/") # ys = ['4','18','1955']
        dod = Date(int(ys[0]),int(ys[1]),int(ys[2]))
    celebrities.append((xs[0],xs[1],dob,dod))
# return celebrities
for celebrity in celebrities:
    print(celebrity[0],celebrity[1],str(celebrity[2]),str(celebrity[3]))

Albert Einstein 3 4
Donald Knuth 1 None
Srinivasa Ramanujan 12 4
Isaac Newton 12 3
Tim Berners-Lee 6 None
Alonzo Church 8 6
Alan Turing 6 6
Leonhard Euler 4 9
Jimi Hendrix 11 9
Bob Marley 2 5
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