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D335 Python Endgame
Fun-lets Comprehensive
Questions (Frequently
Tested)with Verified
Answers Graded A+
1/
7
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1. Convert pairs of values in a csv row into a dictionary: for row
in csv_reader: Answer:
row_dict = dict(zip(row[::2], row[1::2]))
print(row_dict)
2. Extract words listed alphabetically by line from a text file and
create a dic- tionary with the first letter of the words comprising the
key, and the words themselves in a list as the corresponding value.:
Answer:
with open(<file>, 'r') as f:
dic = {}
lines = f.readlines()
for line in lines:
dic[line[0]] = line.split()
3. Given a ten-digit integer, isolate the first three, next three and last
four digits using floor and modulo.: #shear right 7 digits
first_three = ten_digits // 10000000
#shear right 4 digits then shear left 3 digits
next_three = (ten_digits // 10000) % 1000
#shear left 7 digits
last_four = ten_digits % 10000
4. Insert SSN-style dashes:Answer:
original_string = '123456789'
formatted_string = original_string[:3] + '-' + original_string[3:5] + '-' + original_string[5:]
print(formatted_string)
5. Load the contents of a csv file into memory: import csv
with open('data.csv', 'r') as f:
csv_reader = csv.reader(f)
1/
7
D335 Python Endgame
Fun-lets Comprehensive
Questions (Frequently
Tested)with Verified
Answers Graded A+
1/
7
, Contact forr furrther consultation
1. Convert pairs of values in a csv row into a dictionary: for row
in csv_reader: Answer:
row_dict = dict(zip(row[::2], row[1::2]))
print(row_dict)
2. Extract words listed alphabetically by line from a text file and
create a dic- tionary with the first letter of the words comprising the
key, and the words themselves in a list as the corresponding value.:
Answer:
with open(<file>, 'r') as f:
dic = {}
lines = f.readlines()
for line in lines:
dic[line[0]] = line.split()
3. Given a ten-digit integer, isolate the first three, next three and last
four digits using floor and modulo.: #shear right 7 digits
first_three = ten_digits // 10000000
#shear right 4 digits then shear left 3 digits
next_three = (ten_digits // 10000) % 1000
#shear left 7 digits
last_four = ten_digits % 10000
4. Insert SSN-style dashes:Answer:
original_string = '123456789'
formatted_string = original_string[:3] + '-' + original_string[3:5] + '-' + original_string[5:]
print(formatted_string)
5. Load the contents of a csv file into memory: import csv
with open('data.csv', 'r') as f:
csv_reader = csv.reader(f)
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7
