实际案例
某个字典存储了一系列属性值，
{
"lodDist": 100.0,
"SmallCull": 0.04,
"DistCull": 500.0,
"trilinear": 40,
"farclip": 477
}
在程序中，我们想以如下工整的格式将其内容输出，如何处理？
SmallCull : 0.04
lodDist : 100.0
DistCull : 500.0
trilinear : 40
farclip : 477
看到这里大部分人会想到:
In [1]: s = 'abc' In [2]: s.ljust? Docstring: S.ljust(width[, fillchar]) -> str Return S left-justified in a Unicode string of length width. Padding is done using the specified fill character (default is a space). Type: builtin_function_or_method In [3]: s.ljust(20) Out[3]: 'abc ' In [4]: s.rjust(20) Out[4]: ' abc' In [5]: s.center? Docstring: S.center(width[, fillchar]) -> str Return S centered in a string of length width. Padding is done using the specified fill character (default is a space) Type: builtin_function_or_method In [6]: s.center(20) Out[6]: ' abc '
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In
[
1
]
:
s
=
'abc'
In
[
2
]
:
s
.
ljust
?
Docstring
:
S
.
ljust
(
width
[
,
fillchar
]
)
->
str
Return
S
left
-
justified
in
a
Unicode
string
of
length
width
.
Padding
is
done
using
the
specified
fill
character
(
default
is
a
space
)
.
Type
:
builtin_function_or_method
In
[
3
]
:
s
.
ljust
(
20
)
Out
[
3
]
:
'abc '
In
[
4
]
:
s
.
rjust
(
20
)
Out
[
4
]
:
' abc'
In
[
5
]
:
s
.
center
?
Docstring
:
S
.
center
(
width
[
,
fillchar
]
)
->
str
Return
S
centered
in
a
string
of
length
width
.
Padding
is
done
using
the
specified
fill
character
(
default
is
a
space
)
Type
:
builtin_function_or_method
In
[
6
]
:
s
.
center
(
20
)
Out
[
6
]
:
' abc '
|
还有一种就是format
In [7]: format? Signature: format(value, format_spec='', /) Docstring: Return value.__format__(format_spec) format_spec defaults to the empty string Type: builtin_function_or_method In [8]: format(s,'<20') Out[8]: 'abc ' In [9]: format(s,'>20') Out[9]: ' abc' In [10]: format(s,'^20') Out[10]: ' abc '
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In
[
7
]
:
format
?
Signature
:
format
(
value
,
format_spec
=
''
,
/
)
Docstring
:
Return
value
.
__format__
(
format_spec
)
format_spec
defaults
to
the
empty
string
Type
:
builtin_function_or_method
In
[
8
]
:
format
(
s
,
'<20'
)
Out
[
8
]
:
'abc '
In
[
9
]
:
format
(
s
,
'>20'
)
Out
[
9
]
:
' abc'
In
[
10
]
:
format
(
s
,
'^20'
)
Out
[
10
]
:
' abc '
|
# -*- coding: utf-8 -*- __author__ = 'songhao' d = { "lodDist": 100.0, "SmallCull": 0.04, "DistCull": 500.0, "trilinear": 40, "farclip": 477 } # 先获取最大长度 w = max(map(len, d.keys())) print("第一种方法:") for x in d.keys(): print(x.ljust(w), ':', d[x]) print("第二种方法:") for x in d.keys(): print(format(x, "<"+str(w)), ':', d[x]) ####out## # 第一种方法: # lodDist : 100.0 # SmallCull : 0.04 # DistCull : 500.0 # trilinear : 40 # farclip : 477 # 第二种方法: # lodDist : 100.0 # SmallCull : 0.04 # DistCull : 500.0 # trilinear : 40 # farclip : 477
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# -*- coding: utf-8 -*-
__author__
=
'songhao'
d
=
{
"lodDist"
:
100.0
,
"SmallCull"
:
0.04
,
"DistCull"
:
500.0
,
"trilinear"
:
40
,
"farclip"
:
477
}
# 先获取最大长度
w
=
max
(
map
(
len
,
d
.
keys
(
)
)
)
print
(
"第一种方法:"
)
for
x
in
d
.
keys
(
)
:
print
(
x
.
ljust
(
w
)
,
':'
,
d
[
x
]
)
print
(
"第二种方法:"
)
for
x
in
d
.
keys
(
)
:
print
(
format
(
x
,
"<"
+
str
(
w
)
)
,
':'
,
d
[
x
]
)
####out##
# 第一种方法:
# lodDist : 100.0
# SmallCull : 0.04
# DistCull : 500.0
# trilinear : 40
# farclip : 477
# 第二种方法:
# lodDist : 100.0
# SmallCull : 0.04
# DistCull : 500.0
# trilinear : 40
# farclip : 477
|
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