Python ： 使用 end= 后如何在 for 循环中使用 end= " " 打印新行？

Question

我试图使用for循环打印出列表中客户的记录，但列表中的每一项都在每一行中打印出来。因此，我尝试使用end="quot在同一行打印每一项，但每当打印出最后一列记录时，我如何在下一行打印另一条客户记录？

customer_list = [["ctm1","jaconsdsdsd","[e-mail]","[phone]","15/5/1990"],["ctm2","jactin","[e-mail]","[phone]","15/5/1990"],["ctm3","jactmartin","[e-mail]","[phone]","15/5/1990"]]
# show records of customer account info
def view_customer_account():
# initialize column length
column_length = [2,8,13,12,13]
# loop for longest data length and make it as column length
# column length will remain as initial column length if longest data length is shorter than it
for customer in customer_list:
for i in range(len(column_length)):
if len(customer[i]) > column_length[i]:
column_length[i] = len(customer[i])
# print column name
# column name string will concatenate with a space which multiply with (column length - initial column length)
print(f'| ID{" "*(column_length[0]-2)} | Username{" "*(column_length[1]-8)} | Email Address{" "*(column_length[2]-13)} | Phone number | Date of Birth |')
# print records
# records(str) will concatenate with a space which multiply with (column length/initial column length) - records str length
for customer in customer_list:
for i in range(len(column_length)):
print(f'| {customer[i]+" "*(column_length[i]-len(customer[i]))} ',end="")

view_customer_account()

在不使用end＝"strong"的情况下输出">：

| ID   | Username    | Email Address        | Phone number | Date of Birth |
| ctm1
| jaconsdsdsd
| [e-mail]
| [phone]
| 15/5/1990
| ctm2
| jactin
| [e-mail]        
| [phone]
| 15/5/1990
| ctm3
| jactmartin
| [e-mail]
| [phone]
| 15/5/1990

输出带有end＝"">：

| ID   | Username    | Email Address        | Phone number | Date of Birth |
| ctm1 | jaconsdsdsd | [e-mail]         | [phone] | 15/5/1990     | ctm2 | jactin      
| [e-mail]        | [phone] | 15/5/1990     | ctm3 | jactmartin  | [e-mail] | [phone] | 15/5/1990

预期输出：

| ID   | Username    | Email Address        | Phone number | Date of Birth |
| ctm1 | jaconsdsdsd | [e-mail]         | [phone] | 15/5/1990     |
| ctm2 | jactin      | [e-mail]        | [phone] | 15/5/1990     |
| ctm3 | jactmartin  | [e-mail] | [phone] | 15/5/1990     |

Answer 1

只需在外部循环中添加一个print()语句(不带任何参数(。"；最里面的"；print添加代码的末尾。

它只会推进"；光标"；在没有实际打印任何内容的情况下转换为新行。

Answer 2

在内部for循环后添加print('|')，以打印每行的最后一个|字符并插入新行：

for customer in customer_list:
for i in range(len(column_length)):
print(f'| {customer[i] + " " * (column_length[i] - len(customer[i]))} ', end="")
print('|')  # add this one

输出：

| ID   | Username    | Email Address        | Phone number | Date of Birth |
| ctm1 | jaconsdsdsd | [e-mail]         | [phone] | 15/5/1990     |
| ctm2 | jactin      | [e-mail]        | [phone] | 15/5/1990     |
| ctm3 | jactmartin  | [e-mail] | [phone] | 15/5/1990     |