一旦我将客户，销售和thread_sold添加到列表中，它将重复3次。为什么？
一切正常，直到最后一个for循环为止，该循环应该有效，但是无效。
我试图使用许多在线和离线编译器，例如Visual Studio Code。但是，似乎没有任何内容想要以正确的方式显示。我不明白的是，如果我从不使用循环来重复它，它将执行4次吗？
daily_sales = \
"""Edith Mcbride ;,;$1.21 ;,; white ;,;
09/15/17 ,Herbert Tran ;,; $7.29;,;
white&blue;,; 09/15/17 ,Paul Clarke ;,;$12.52
;,; white&blue ;,; 09/15/17 ,Lucille Caldwell
;,; $5.13 ;,; white ;,; 09/15/17,
Eduardo George ;,;$20.39;,; white&yellow
;,;09/15/17 , Danny Mclaughlin;,;$30.82;,;
purple ;,;09/15/17 ,Stacy Vargas;,; $1.85 ;,;
purple&yellow ;,;09/15/17, Shaun Brock;,;
$17.98;,;purple&yellow ;,; 09/15/17 ,
Erick Harper ;,;$17.41;,; blue ;,; 09/15/17,
Michelle Howell ;,;$28.59;,; blue;,; 09/15/17 ,
Carroll Boyd;,; $14.51;,; purple&blue ;,;
09/15/17 , Teresa Carter ;,; $19.64 ;,;
white;,;09/15/17 , Jacob Kennedy ;,; $11.40
;,; white&red ;,; 09/15/17, Craig Chambers;,;
$8.79 ;,; white&blue&red ;,;09/15/17 , Peggy Bell;,; $8.65 ;,;blue ;,; 09/15/17, Kenneth Cunningham ;,; $10.53;,; green&blue ;,;
09/15/17 , Marvin Morgan;,; $16.49;,;
green&blue&red ;,; 09/15/17 ,Marjorie Russell
;,; $6.55 ;,; green&blue&red;,; 09/15/17 ,
Israel Cummings;,; $11.86 ;,;black;,;
09/15/17, June Doyle ;,; $22.29 ;,;
black&yellow ;,;09/15/17 , Jaime Buchanan ;,;
$8.35;,; white&black&yellow ;,; 09/15/17,
Rhonda Farmer;,;$2.91 ;,; white&black&yellow
;,;09/15/17, Darren Mckenzie ;,;$22.94;,;green
;,;09/15/17,Rufus Malone;,;$4.70 ;,; green&yellow
;,; 09/15/17 ,Hubert Miles;,; $3.59
;,;green&yellow&blue;,; 09/15/17 , Joseph Bridges ;,;$5.66 ;,; green&yellow&purple&blue
;,; 09/15/17 , Sergio Murphy ;,;$17.51 ;,;
black ;,; 09/15/17 , Audrey Ferguson ;,;
$5.54;,;black&blue ;,;09/15/17 ,Edna Williams ;,;
$17.13;,; black&blue;,; 09/15/17, Randy Fleming;,; $21.13 ;,;black ;,;09/15/17 ,Elisa Hart;,; $0.35 ;,; black&purple;,; 09/15/17 ,
Ernesto Hunt ;,; $13.91 ;,; black&purple ;,;
09/15/17, Shannon Chavez ;,;$19.26 ;,;
yellow;,; 09/15/17 , Sammy Cain;,; $5.45;,;
yellow&red ;,;09/15/17 , Steven Reeves ;,;$5.50
;,; yellow;,; 09/15/17, Ruben Jones ;,;
$14.56 ;,; yellow&blue;,;09/15/17 , Essie Hansen;,; $7.33 ;,; yellow&blue&red
;,; 09/15/17 , Rene Hardy ;,; $20.22 ;,;
black ;,; 09/15/17 , Lucy Snyder ;,; $8.67
;,;black&red ;,; 09/15/17 ,Dallas Obrien ;,;
$8.31;,; black&red ;,; 09/15/17, Stacey Payne
;,; $15.70 ;,; white&black&red ;,;09/15/17
, Tanya Cox ;,; $6.74 ;,;yellow ;,;
09/15/17 , Melody Moran ;,; $30.84
;,;yellow&black;,; 09/15/17 , Louise Becker ;,;
$12.31 ;,; green&yellow&black;,; 09/15/17 ,
Ryan Webster;,;$2.94 ;,; yellow ;,; 09/15/17
,Justin Blake ;,; $22.46 ;,;white&yellow ;,;
09/15/17, Beverly Baldwin ;,; $6.60;,;
white&yellow&black ;,;09/15/17 , Dale Brady
;,; $6.27 ;,; yellow ;,;09/15/17 ,Guadalupe Potter ;,;$21.12 ;,; yellow;,; 09/15/17 ,
Desiree Butler ;,;$2.10 ;,;white;,; 09/15/17
,Sonja Barnett ;,; $14.22 ;,;white&black;,;
09/15/17, Angelica Garza;,;$11.60;,;white&black
;,; 09/15/17 , Jamie Welch ;,; $25.27 ;,;
white&black&red ;,;09/15/17 , Rex Hudson
;,;$8.26;,; purple;,; 09/15/17 , Nadine Gibbs
;,; $30.80 ;,; purple&yellow ;,; 09/15/17 ,
Hannah Pratt;,; $22.61 ;,; purple&yellow
;,;09/15/17,Gayle Richards;,;$22.19 ;,;
green&purple&yellow ;,;09/15/17 ,Stanley Holland
;,; $7.47 ;,; red ;,; 09/15/17 , Anna Dean;,;$5.49 ;,; yellow&red ;,; 09/15/17 ,
Terrance Saunders ;,; $23.70 ;,;green&yellow&red
;,; 09/15/17 , Brandi Zimmerman ;,; $26.66 ;,;
red ;,;09/15/17 ,Guadalupe Freeman ;,; $25.95;,;
green&red ;,; 09/15/17 ,Irving Patterson
;,;$19.55 ;,; green&white&red ;,; 09/15/17 ,Karl Ross;,; $15.68;,; white ;,; 09/15/17 , Brandy Cortez ;,;$23.57;,; white&red ;,;09/15/17,
Mamie Riley ;,;$29.32;,; purple;,;09/15/17 ,Mike Thornton ;,; $26.44 ;,; purple ;,; 09/15/17,
Jamie Vaughn ;,; $17.24;,;green ;,; 09/15/17 ,
Noah Day ;,; $8.49 ;,;green ;,;09/15/17
,Josephine Keller ;,;$13.10 ;,;green;,; 09/15/17 , Tracey Wolfe;,;$20.39 ;,; red ;,; 09/15/17 ,
Ignacio Parks;,;$14.70 ;,; white&red ;,;09/15/17
, Beatrice Newman ;,;$22.45 ;,;white&purple&red
;,; 09/15/17, Andre Norris ;,; $28.46 ;,;
red;,; 09/15/17 , Albert Lewis ;,; $23.89;,;
black&red;,; 09/15/17, Javier Bailey ;,;
$24.49 ;,; black&red ;,; 09/15/17 , Everett Lyons ;,;$1.81;,; black&red ;,; 09/15/17 ,
Abraham Maxwell;,; $6.81 ;,;green;,; 09/15/17
, Traci Craig ;,;$0.65;,; green&yellow;,;
09/15/17 , Jeffrey Jenkins ;,;$26.45;,;
green&yellow&blue ;,; 09/15/17, Merle Wilson
;,; $7.69 ;,; purple;,; 09/15/17,Janis Franklin
;,;$8.74 ;,; purple&black ;,;09/15/17 ,
Leonard Guerrero ;,; $1.86 ;,;yellow
;,;09/15/17,Lana Sanchez;,;$14.75 ;,; yellow;,;
09/15/17 ,Donna Ball ;,; $28.10 ;,;
yellow&blue;,; 09/15/17 , Terrell Barber ;,;
$9.91 ;,; green ;,;09/15/17 ,Jody Flores;,;
$16.34 ;,; green ;,; 09/15/17, Daryl Herrera
;,;$27.57;,; white;,; 09/15/17 , Miguel Mcguire;,;$5.25;,; white&blue ;,; 09/15/17 ,
Rogelio Gonzalez;,; $9.51;,; white&black&blue
;,; 09/15/17 , Lora Hammond ;,;$20.56 ;,;
green;,; 09/15/17,Owen Ward;,; $21.64 ;,;
green&yellow;,;09/15/17,Malcolm Morales ;,;
$24.99 ;,; green&yellow&black;,; 09/15/17 ,
Eric Mcdaniel ;,;$29.70;,; green ;,; 09/15/17
,Madeline Estrada;,; $15.52;,;green;,; 09/15/17
, Leticia Manning;,;$15.70 ;,; green&purple;,;
09/15/17 , Mario Wallace ;,; $12.36 ;,;green ;,;
09/15/17,Lewis Glover;,; $13.66 ;,;
green&white;,;09/15/17, Gail Phelps ;,;$30.52
;,; green&white&blue ;,; 09/15/17 , Myrtle Morris
;,; $22.66 ;,; green&white&blue;,;09/15/17"""
#------------------------------------------------
# Start coding below!
daily_sales_replaced = daily_sales.replace(";,;", '*')
daily_transactions = daily_sales_replaced.split(",")
#print(daily_transactions)
daily_transactions_split = []
for transaction in daily_transactions:
daily_transactions_split.append(transaction.split("*"))
#print(daily_transactions_split)
transactions_clean = []
for transaction in daily_transactions_split:
transaction_clean = []
for data_point in transaction:
transaction_clean.append(data_point.replace("\n", "").strip(" "))
transactions_clean.append(transaction_clean)
#print(transactions_clean)
customers = []
sales = []
thread_sold = []
for transaction in transactions_clean:
customers.append(transaction[0])
#sales.append(transaction[1])
#thread_sold.append(transaction[2])
print(customers)
#print(sales)
#print(thread_sold)
应在客户[]中显示所有客户，每个名称一次。但是，它每显示4次。
这是一个参考Code Academy的Python项目：Thread Shed的问题
答案 0 :(得分：1)
问题出在块上
for transaction in daily_transactions_split:
transaction_clean = []
for data_point in transaction:
transaction_clean.append(data_point.replace("\n", "").strip(" "))
transactions_clean.append(transaction_clean)
将执行该行
transactions_clean.append(transaction_clean)
在当前data_point中的每个transaction中一次，并且每次append中一次，您在transactions_clean中获得多个实例。您希望它每个transaction仅执行一次，即
for transaction in daily_transactions_split:
transaction_clean = []
for data_point in transaction:
transaction_clean.append(data_point.replace("\n", "").strip(" "))
transactions_clean.append(transaction_clean)