Python 如何打印10列整数列表？

我知道这可能非常简单，但我正在努力。我想把这张素数列表打印在对齐的列中，每行有10个素数

我的程序目前将所有数字打印在一行中

prime = []
not_prime = []

for i in range(2,numbers+1):

    if i not in not_prime:
        prime.append(i)

        for x in range(i**2,numbers+1,i):
            not_prime.append(x)

print (*prime, sep=' ')

---

请帮帮我。谢谢大家!

这个最简单的方法就是在打印（*prime，sep=''）的

末尾迭代
prime

如果您正在使用Python 2：

# use `numbers = 100` as an example
numbers = 100

prime = []
not_prime = []

for i in range(2,numbers+1):

    if i not in not_prime:
        prime.append(i)

        for x in range(i**2,numbers+1,i):
            not_prime.append(x)

# `enumerate` gives us a tuple of (index, element) in an iterable
for idx, p in enumerate(prime):

    # "{:3d}" is a format string that is similar to the C-style
    # of %X.YA where `X` denotes the character width, `.Y` denotes
    # how many places to display in a floating point number,
    # and `A` denotes the type of what's being printed. Also note,
    # in Python, you don't need to use the `d` in `:3d`, you can just
    # do `{:3}`, but I've included it for your knowledge.
    #
    # the comma says 'don't add a newline after you print this'
    print "{:3d}".format(p),

    # we'll use `idx + 1` to avoid having to deal with the
    # 0-indexing case (i.e., 0 modulo anything is 0)
    if (idx + 1) % 10 == 0:

        # just print a newline
        print

结果:

  2   3   5   7  11  13  17  19  23  29
 31  37  41  43  47  53  59  61  67  71
 73  79  83  89  97

编辑：

如果使用的是Python 3，则需要更改：

print "{:3}".format(p),

到

您将需要更改新行的打印位置

print ()

因此，生成的代码是：

# use `numbers = 100` as an example
numbers = 100

prime = []
not_prime = []

for i in range(2,numbers+1):

    if i not in not_prime:
        prime.append(i)

        for x in range(i**2,numbers+1,i):
            not_prime.append(x)

# `enumerate` gives us a tuple of (index, element) in an iterable
# `start=1` tells enumerate to use a 1-based indexing rather than
# 0-based.
for idx, p in enumerate(prime, start=1):

    # "{:3d}" is a format string that is similar to the C-style
    # of %X.YA where `X` denotes the character width, `.Y` denotes
    # how many places to display in a floating point number,
    # and `A` denotes the type of what's being printed. Also note,
    # in Python, you don't need to use the `d` in `:3d`, you can just
    # do `{:3}`, but I've included it for your knowledge.
    #
    # the comma says 'don't add a newline after you print this'
    print ("{:3d}".format(p), end="")

    # if it's a multiple of 10, print a newline
    if idx % 10 == 0:

        # just print a newline
        print ()

当我运行这个程序时，我得到一个“{:3d}”的语法错误。我不知道为什么。我也尝试过在没有d的情况下运行它。您正在运行什么版本的Python？3.4.3谢谢您的帮助@迈克尔雷
# use `numbers = 100` as an example
numbers = 100

prime = []
not_prime = []

for i in range(2,numbers+1):

    if i not in not_prime:
        prime.append(i)

        for x in range(i**2,numbers+1,i):
            not_prime.append(x)

# `enumerate` gives us a tuple of (index, element) in an iterable
# `start=1` tells enumerate to use a 1-based indexing rather than
# 0-based.
for idx, p in enumerate(prime, start=1):

    # "{:3d}" is a format string that is similar to the C-style
    # of %X.YA where `X` denotes the character width, `.Y` denotes
    # how many places to display in a floating point number,
    # and `A` denotes the type of what's being printed. Also note,
    # in Python, you don't need to use the `d` in `:3d`, you can just
    # do `{:3}`, but I've included it for your knowledge.
    #
    # the comma says 'don't add a newline after you print this'
    print ("{:3d}".format(p), end="")

    # if it's a multiple of 10, print a newline
    if idx % 10 == 0:

        # just print a newline
        print ()