python - 显示数字的前导零(Display number with leading zeros)

Question

Given:

(鉴于：)

a = 1
b = 10
c = 100

How do I display a leading zero for all numbers with less than two digits?

(如何为少于两位的所有数字显示前导零？)

That is,

(那是，)

01
10
100

  ask by ashchristopher translate from so

Answer 1

In Python 2 you can do:

(在Python 2中，您可以执行以下操作：)

print "%02d" % (1,)

Basically % is like printf or sprintf .

(基本上％就像printf或sprintf 。)

---

For Python 3.+ the same behavior can be achieved with:

(对于Python 3. +，可以通过以下方式实现相同的行为：)

print("{:02d}".format(1))

---

For Python 3.6+ the same behavior can be achieved with f-strings:

(对于Python 3.6+，可以使用f字符串实现相同的行为：)

print(f"{1:02d}")