如何并排打印两个不同大小的列表?

How to print two lists of different size side by side?

我有两个不同长度的列表,我想并排打印,用制表符分隔。例如:

a_list = ["a","b","c","d","e"]
b_list = ["f","g","h","i","j","k","l","m","n"]

我试过了:

print('A-list:'+ '\t' + 'B-list:')
for i in range(len(b_list)):
    print(a_list[i] + '\t' + b_list[i])

我当然得到 "out of range-trace" 回复,因为一个列表更短。我希望使用 zip。

因为 b_list 的长度大于 a_list 的长度,所以你的代码变大了 IndexError,为此,你可以使用 try except 语句:

for i in range(max(len(b_list), len(a_list))):
    try:
        print(f"{a_list[i]}\t", end="")
    except IndexError:
        print(f" \t", end="")
    try:
        print(f"{b_list[i]}\t")
    except IndexError:
        print(f" \t")

输出:

a   f
b   g
c   h
d   i
e   j
    k
    l
    m
    n

这是一个可能的解决方案。 a_listb_list 长还是短都没有关系。

def get(lst, idx):
    try:
        return lst[idx]
    except:
        return " "

a_list = ['a','b','c','d','e'] 
b_list = ['f','g','h','i','j','k','l','m','n']

result = []

for i in range(min(len(a_list), len(b_list))):
    result.append(get(a_list, i))
    result.append(get(b_list, i))

for i in range(min(len(a_list), len(b_list)), max(len(a_list), len(b_list))):
    result.append(get(a_list, i))
    result.append(get(b_list, i))

print('\n'.join('\t'.join((result[i], result[i+1]))
                          for i in range(0, len(result), 2)))

这会打印出预期的输出:

a   f
b   g
c   h
d   i
e   j
    k
    l
    m
    n

没有任何额外的循环:

list_a = ["A", "B", "C"]
list_b = ["1", "2", "3", "4"]
len_a = len(list_a)
len_b = len(list_b)
i = 0
while True:
    if i < len_a:
        print(list_a[i], end="")
    if i < len_b:
        print("\t", list_b[i], end="")
    print()
    i += 1
    if i > max(len_a, len_a):
        break
def iterate(a_list, b_list):
  # iterate through short list
  min_length = min(((len(a_list), len(b_list)))) 

  for i in range(min_length):
    print('{}\t{}'.format(a_list[i], b_list[i]))

  # print remaining items accordingly
  if i + 1 == len(a_list):
    for item in b_list[i+1:]:
      print('\t{}'.format(item))  
  else:
    for item in a_list[i+1:]:
      print(item) 

我建议使用字符串方法格式,它允许您在列表中包含任何类型的元素。

在所有解决方案中,诀窍是遍历最长的列表并使用空 space 来弥补较短列表中缺失的条目。

例如:

a_list = ['a','b','c','d','e'] 
b_list = ['f','g','h','i','j','k','l','m','n']

for i in range(max(len(a_list),len(b_list))):
    a = a_list[i:i+1] or [""]
    b = b_list[i:i+1] or [""]
    print(a[0]+"\t"+b[0])

如果您不关心内存使用情况,您也可以用空白填充列表,以便有一个假设相同大小的列表的更简单的打印过程:

padding  = len(b_list)-len(a_list)
a_padded = a_list + [""]*padding
b_padded = b_list + [""]*-padding
for i in range(len(a_padded)):
    print(a_padded[i]+"\t"+b_padded[i])

你可以试试这个:

test1 = [1, 2, 3, 4]
test2 = [1, 2, 3, 4, 5]
test3 = [1, 2]

while test or test2 or test3:
    print(test.pop() if test else '',\
          test2.pop() if test2 else '',\
          test3.pop()if test3 else '')