This content originally appeared on DEV Community and was authored by Super Kai (Kazuya Ito)
*Memos:
- My post explains Format Specification Mini-Language with format() (1).
- My post explains Format Specification Mini-Language with format() (2).
- My post explains Format Specification Mini-Language with format() (4).
- My post explains format().
- My post explains a string.
:[f][a][s][z][#][0][w][g][.p][t] can do alignment or other things for a string as shown below:
<Format a string with ‘s’ for str>:
v = 'hello world'
print(v)
# hello world
print('"{:.20s}"'.format(v))
print('"{:.11s}"'.format(v))
print('"{:.11}"'.format(v))
print('"{:s}"'.format(v))
print('"{:}"'.format(v))
print('"{}"'.format(v))
# "hello world"
print('"{:.9s}"'.format(v))
# "hello wor"
print('"{:.6s}"'.format(v))
# "hello "
print('"{:.2s}"'.format(v))
# "he"
print('"{:.1s}"'.format(v))
# "h"
print('"{:.0s}"'.format(v))
# ""
v = '123456789'
print(v)
# 123456789
print('"{:.15s}"'.format(v))
print('"{:.9s}"'.format(v))
print('"{:.9}"'.format(v))
print('"{:s}"'.format(v))
print('"{:}"'.format(v))
print('"{}"'.format(v))
# "123456789"
print('"{:.6s}"'.format(v))
# "123456"
print('"{:.2s}"'.format(v))
# "12"
print('"{:.1s}"'.format(v))
# "1"
print('"{:.0s}"'.format(v))
# ""
<Format a string with ‘d’ for int>:
v = 123456789
print(v)
# 123456789
print('"{:d}"'.format(v))
print('"{:}"'.format(v))
print('"{}"'.format(v))
# "123456789"
print('"{:,d}"'.format(v))
print('"{:,}"'.format(v))
# "123,456,789"
print('"{:_d}"'.format(v))
print('"{:_}"'.format(v))
# "123_456_789"
<Format a string with ‘f’ for float>:
v = 1234.5555555555
# | 10 |
print(v)
# 1234.5555555555
# | 10 |
print('"{:.20f}"'.format(v))
print('"{:.20F}"'.format(v))
# "1234.55555555549995006004"
# | 20 |
print('"{:.14f}"'.format(v))
print('"{:.14F}"'.format(v))
# "1234.55555555549995"
# | 14 |
print('"{:.13f}"'.format(v))
print('"{:.13F}"'.format(v))
# "1234.5555555555000"
# | 13 |
print('"{:.10f}"'.format(v))
print('"{:.10F}"'.format(v))
print('"{:}"'.format(v))
print('"{}"'.format(v))
# "1234.5555555555"
# | 10 |
print('"{:.6f}"'.format(v))
print('"{:.6F}"'.format(v))
print('"{:f}"'.format(v))
print('"{:F}"'.format(v))
# "1234.555556"
# | 6 |
print('"{:.2f}"'.format(v))
print('"{:.2F}"'.format(v))
# "1234.56"
print('"{:.1f}"'.format(v))
print('"{:.1F}"'.format(v))
# "1234.6"
print('"{:.0f}"'.format(v))
print('"{:.0F}"'.format(v))
# "1235"
print('"{:#.0f}"'.format(v))
print('"{:#.0F}"'.format(v))
# "1235."
print('"{:,.20f}"'.format(v))
print('"{:,.20F}"'.format(v))
# "1,234.55555555549995006004"
# | 20 |
print('"{:,.0f}"'.format(v))
print('"{:,.0F}"'.format(v))
# "1,235"
print('"{:_f}"'.format(v))
print('"{:_F}"'.format(v))
# "1_234.555556"
# | 6 |
print('"{:_}"'.format(v))
# "1_234.5555555555"
# | 10 |
print("{:f} {:f}".format(float('nan'), float('inf')))
# nan inf
print("{:F} {:F}".format(float('nan'), float('inf')))
# NAN INF
This content originally appeared on DEV Community and was authored by Super Kai (Kazuya Ito)