Intro to Python

I'm getting trouble obtaining the solution for the followingquestions:

\"How many babies were born with names starting with thatleast-common letter?\" For the file used it is \"U\"

\"How many babies were born with names starting with that-commonletter\"? For the file used it is \"A\"

\"How many people have that name?\" (This follows the question \"Bydefault, the Social Security Administration's data separates outnames by gender. For example, Jamie is listed separately for girlsand for boys. If you were to remove this separation, what would bethe most common name in the 2010s regardless of gender?\" And thefile I used it is \"Isabella\")

\"What name that is used for both genders has the smallestdifference in which gender holds the name most frequently? In caseof a tie, enter any one of the correct answers.\"

This is the problem:

#-----------------------------------------------------------
#The United States Social Security Administration publishes
#a list of all documented baby names each year, along with
#how often each name was used for boys and for girls. The
#list is used to see what names are most common in a given
#year.
#
#We've grabbed that data for any name used more than 25
#times, and provided it to you in a file called
#babynames.csv. The line below will open the file:

names_file = open('../resource/lib/public/babynames.csv','r')

#We've also provided a sample subset of the data in
#sample.csv.
#
#Each line of the file has three values, separated by
#commas. The first value is the name; the second value is
#the number of times the name was given in the 2010s (so
#far); and the third value is whether that count
#corresponds to girls or boys. Note that if a name is
#given to both girls and boys, it is listed twice: for
#example, so far in the 2010s, the name Jamie has been
#given to 611 boys and 1545 girls.
#
#Use this dataset to answer the questions below.

#Here, add any code you want to allow you to answer the
#questions asked below over on edX. This is just a sandbox
#for you to explore the dataset: nothing is required for
#submission here.

//

This is the format of the file but this is not file the problemis based on:

Isabella,42567,Girl
Sophia,42261,Girl
Jacob,42164,Boy
Emma,35951,Girl
Ethan,34523,Boy
Mason,34195,Boy
William,34130,Boy
Olivia,34128,Girl
Jayden,33962,Boy
Ava,30765,Girl

I found the solution and it's this:

baby_list=[]

for line in names_file:
line=line.strip().split(\",\")
name=line[0]
count=int(line[1])
gender=line[2]
baby_list.append([name,count,gender])

#How many total names are listed in the database?
print('Total names:',len(baby_list))

#How many total births are covered by the names in thedatabase?
births=0
for data in baby_list:
births=births+data[1]

print('total births:',births)

#How many different boys' names are there that begin with theletter Z?
#(Count the names, not the people.)
names_with_z=0
for data in baby_list:
if data[0][0]=='Z' and data[2]=='Boy':
names_with_z=names_with_z+1

print('Different boys names are there that begin with the letterZ:',names_with_z)

#What is the most common girl's name that begins with the letterQ?
names_with_Q=0
for data in baby_list:
if data[0][0]=='Q' and data[2]=='Girl' and data[1]>names_with_Q:
girl_name=data[0]
names_with_Q=data[1]

print('The most common girl\'s name that begins with the letterQ:',names_with_Q)

#How many total babies were given names that both start and endwith vowels (A, E, I, O, or U)?
vowels='AEIOUaeiou'
total_names=0
for data in baby_list:
if data[0][0] in vowels and data[0][-1] in vowels:
total_names=total_names+ data[1]

print('The total babies were given names that both start and endwith vowels(A,E,I,O,or U):'\
,total_names)

#Here, add any code you want to allow you to answer the
#questions asked below over on edX. This is just a sandbox
#for you to explore the dataset: nothing is required for
#submission here.

#What letter is the least common first letter of a baby'sname
name_list = {}
for i in range(len(baby_list)):
fl = list(baby_list[i][0])[0]
if fl not in name_list.keys():
name_list[fl] = 1
else:
name_list[fl] = int(name_list[fl]) + 1
#What letter is the least common first letter of a baby'sname
leastKey = 9999
mostKey = 0
least=''
most=''
print(name_list.keys())
for key in name_list.keys():
if name_list[key] < leastKey:
least = key
leastKey = name_list[key]
if name_list[key] > mostKey:
most = key
mostKey = name_list[key]
print('\nThe letter is the least common first letter of a baby\'sname is: ',least)
#How many babies were born with names starting with thatleast-common letter?
print('\nNumber of babie names starting with that least-commonletter',name_list[least])
#What letter is the most common first letter of a baby's name
print(\"\nThe letter is the most common first letter of a baby'sname is: \",most)
#How many babies were born with names starting with thatmost-common letter?
print('\nNumber of babie names starting with that most-commonletter: ',name_list[most])

'''
#By default, the Social Security Administration's data separatesout names by gender.
#For example, Jamie is listed separately for girls and forboys.
#If you were to remove this separation, what would be the mostcommon name
in the 2010s regardless of gender?
'''
name_list = {}
for i in range(len(baby_list)):
name = baby_list[i][0]
ctr = baby_list[i][1]
gndr = baby_list[i][2]
if name in name_list.keys():
name_list[name] = int(name_list[name]) + 1
else:
name_list[name] = 1
mostKey = 0
most=''
for key in name_list.keys():
if name_list[key] > mostKey:
most = key
mostKey = name_list[key]
print('\nThe most common name in the 2010s regardless of gender:',most)

#How many people would have that name?
print('\nThe number of people have most common name regardless ofgender: ',mostKey)

'''
What name that is used for both genders has the smallest differencein
which gender holds the name most frequently? In case of atie,
enter any one of the correct answers.
'''
mini = name_list[most]
name_list = {}
for i in range(len(baby_list)):
name = baby_list[i][0]
ctr = baby_list[i][1]
gndr = baby_list[i][2]
if name in name_list.keys() and gndr != name_list[name][1]:
name_list[name] = [int(name_list[name][0]) -1, gndr, 1]
else:
name_list[name] = [1, gndr, 0]

for x in name_list.keys():
if name_list[x][2] == 1 and name_list[x][0] < mini:
mini = name_list[x][0]
nme = x
print('Name that is used for both genders has the smallestdifference: ',x)