先這么大的免責宣告：我對python和編程很陌生，這是我第一次使用函式。我會很高興得到任何幫助，但這里的最終目標不是擁有最漂亮或最有效的代碼。我只是想讓它以某種方式作業。??
我已經撰寫了下面的程式，但我無法讓它正常作業。
因為這是 Uni 的分級練習，所以我有一定的限制，我應該遵循：
在沒有任何字串切片的情況下作業，并且不要為此任務使用字串方法split()、startswith()、endswith() 或 replace() 。相反，使用 Python re 模塊（re.match、re.search、re.findall、re.sub）使用正則運算式來做所有事情。
這是我的代碼：
import re
import sys
# get the filename
filename = sys.argv[1]
# open a file for reading
infile = open(filename, 'r')
########################################################################################
# Normalising function to normalize ü,?,? etc. and append linens to list
def normalize(infile):
for line in infile:
line = line.lower()
line = re.sub('?', 'ae', line)
line = re.sub('ü', 'ue', line)
line = re.sub('?', 'oe', line)
line = re.sub('é|?', 'e', line)
line_list = []
line_list.append(line)
return(line_list)
########################################################################################
# function to return just the consonants in a given namecdef get_consonants(y):
def get_consonants(y):
only_consonants_sep = re.findall('[^\W_aeiou]', y)
only_consonants = ''.join(only_consonants_sep)
return only_consonants
########################################################################################
# function to return first and last name according to all rules
def parse_name(input_y):
# Parse the names to first (meaning first middle, if it exists) and last names
for element in input_y:
# define last name for later use
last_namegroup = re.search('(\w*)\t', element)
last_name = last_namegroup.group(1)
# define what the middle name is for later use
middle_namegroup = re.search('\s(\w)', element)
middle_name = middle_namegroup.group(1)
# define what first name is for later use
first_namegroup = re.search('^(\S*)', element)
first_name1 = first_namegroup.group(1)
if len(re.findall(' ', element)) > 1:
# remove spaces between first and middle name
# put period between first middle and last name
first_middle_more = re.sub(" ", "", element, count = 1)
#isolate first middle name to determine length afterwards
first_middlegroup = re.search('^(\S*)', first_middle_more)
first_name = first_middlegroup.group(1)
# if the length of first middle is larger than 8
# give first_middle to get_consonant and store output in consonant_letters
if len(first_name) > 8:
consonant_first_middle = get_consonants(first_name)
# if length of consonant_first_middle is still larger than 8
# take the consonants of only the first name
# and add the first letter of the middle name defined above
if len(consonant_first_middle) > 8:
consonant_first_name = get_consonants(first_name1)
first_name = (f'{consonant_first_name}{middle_name}')
# if there is no middle name, i.e. only ones white space in the line
# then just take the word until the space and store it as first_name
else:
first_namegroup = re.search('^(\S*)', element)
first_name = first_namegroup.group(1)
return(first_name, last_name)
########################################################################################
# creating the email addresses
def create_email_address(first_name, last_name):
for lines in infile:
if re.search('\tstu', lines):
domain = (f'{first_name}.{last_name}@uzh.ch')
else:
domain_part = re.search('\t(.*)$',lines)
domain = (f'{first_name}.{last_name}@{domain_part.group(1)}.uzh.ch')
return domain
########################################################################################
# function as the "top level" of the program that calls all other functions as needed.
def main():
####### Receive a file name from the command line
# get the filename
filename = sys.argv[1]
# open a file for reading
infile = open(filename, 'r')
####### Normalise the input
input_normalized = normalize(infile)
####### Parse the names as needed
input_first, input_last = parse_name(input_normalized)
####### Create email addresses
email_output = create_email_address(input_first, input_last)
####### Print the result
for line in infile:
print(f'{line} --> {email_output}')
main_function = main()
print(main_function)
這是我必須使用的輸入檔案：
Raphael Fritz Bernasconi stu
Frédéric Piero cl
S?ren Thadd?us Favre stu
Regula Aegerter stu
No?l ?biger cl
Inés Desirée Muff rom
Sébastien Merian stu
Liam Cereghetti stu
Bj?rn Michael Crivelli ds
Jo?lle Fürrer stu
這是我得到的輸出：
Frédéric Piero cl
--> [email protected]
S?ren Thadd?us Favre stu
--> [email protected]
Regula Aegerter stu
--> [email protected]
No?l ?biger cl
--> [email protected]
Inés Desirée Muff rom
--> [email protected]
Sébastien Merian stu
--> [email protected]
Liam Cereghetti stu
--> [email protected]
Bj?rn Michael Crivelli ds
--> [email protected]
Jo?lle Fürrer stu --> [email protected]
None
如您所見，我認為我在檔案如何迭代我的代碼方面做錯了，但我根本無法弄清楚我做錯了什么。
我很感激你能向我指出的一切！
uj5u.com熱心網友回復：
在我的第一個答案中，我嘗試不更改太多代碼，但我認為重新思考邏輯和重寫代碼會更容易。這是我想出的，我認為這可以滿足您的需求嗎？
import sys, re
def normalize(name):
name = name.lower()
name = re.sub('?', 'ae', name)
name = re.sub('ü', 'ue', name)
name = re.sub('?', 'oe', name)
name = re.sub('é|?', 'e', name)
return name
def remove_vowels(name):
return re.sub('a|e|i|o|u', '', name)
def main(filename):
# a list to store our output
people = []
# let's loop through each line, looking at
# just one person at a time
for line in open(filename, "r"):
# remove trailing \n from each line
line = re.sub("\n", "", line)
# separate the name and domain
name, domain = re.split("\t", line)
# remove the accents and capitals
normalized_name = normalize(name)
# separate the name
# we use a "*" so that the first and last names
# are selected correctly, and then any remaining
# characters in between are put into the middle name.
first_name, *middle_name, last_name = re.split(" ", normalized_name)
middle_name = "".join(middle_name)
full_first_name = first_name middle_name
# this is where we check for how
# long the first and middle names are
if len(full_first_name) > 8:
full_first_name = remove_vowels(full_first_name)
# now we check if this is still too long
if len(full_first_name) > 8:
full_first_name = remove_vowels(first_name)
# check if they actually have a middle name
if middle_name:
full_first_name = middle_name[0]
# now let's grab the domain
subdomain = ""
if domain != "stu":
subdomain = domain "."
host = subdomain "uzh.ch"
# now let's format this into an address
address = f"{full_first_name}.{last_name}@{host}"
people.append((name, address))
return people
filename = sys.argv[1]
people = main(filename)
for name, address in people:
print(name, "-->", address)
輸出：
Raphael Fritz Bernasconi --> [email protected]
Frédéric Piero --> [email protected]
S?ren Thadd?us Favre --> [email protected]
Regula Aegerter --> [email protected]
No?l ?biger --> [email protected]
Inés Desirée Muff --> [email protected]
Sébastien Merian --> [email protected]
Liam Cereghetti --> [email protected]
Bj?rn Michael Crivelli --> [email protected]
Jo?lle Fürrer --> [email protected]
希望代碼中的注釋能很好地解釋發生了什么。
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