*Memo:
- My post explains format().
- My post explains Format Specification with format() (1).
- My post explains Format Specification with format() (2).
- My post explains Format Specification with format() (4).
- My post explains Format Specification with format() (5).
- My post explains format_map().
- My post explains f-strings.
- My post explains a string.
:[f][a][s][z][#][0][w][g][.p][t] can format a string with format() as shown below:
<Format a string with 'str' input by or not by 's'>:
v = 'hello world' print(v) # hello world print('"{:.20s}"'.format(v)) print('"{:.20}"'.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)) print('"{:.9}"'.format(v)) # "hello wor" print('"{:.6s}"'.format(v)) print('"{:.6}"'.format(v)) # "hello " print('"{:.2s}"'.format(v)) print('"{:.2}"'.format(v)) # "he" print('"{:.1s}"'.format(v)) print('"{:.1}"'.format(v)) # "h" print('"{:.0s}"'.format(v)) print('"{:.0}"'.format(v)) # "" v = '123456789' print(v) # 123456789 print('"{:.15s}"'.format(v)) print('"{:.15}"'.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)) print('"{:.6}"'.format(v)) # "123456" print('"{:.2s}"'.format(v)) print('"{:.2}"'.format(v)) # "12" print('"{:.1s}"'.format(v)) print('"{:.1}"'.format(v)) # "1" print('"{:.0s}"'.format(v)) print('"{:.0}"'.format(v)) # "" <Format a string with 'int' input by or not by 'd'>:
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 'float' input by 'f' or 'F'>:
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)) # "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('"{:,f}"'.format(v)) print('"{:,F}"'.format(v)) # "1,234.555556" # | 6 | print('"{:_.20f}"'.format(v)) print('"{:_.20F}"'.format(v)) # "1_234.55555555549995006004" # | 20 | print('"{:_f}"'.format(v)) print('"{:_F}"'.format(v)) # "1_234.555556" # | 6 | print("{:f} {:f}".format(float('nan'), float('inf'))) # nan inf print("{:F} {:F}".format(float('nan'), float('inf'))) # NAN INF 
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