"", regex = True) \
.astype("float")
使用正则替换,将要替换的字符放到列表中 [$,RMB],替换为空字符...构造一个 DataFrame:
d = {\
"district_code": [12345, 56789, 101112, 131415],
"apple": [5.2, 2.4, 4.2, 3.6]...小技巧4:已知 year 和 dayofyear,怎么转 datetime?...day_of_year": [350, 365, 1]
}
df = pd.DataFrame(d)
df
打印结果:
year day_of_year
02019350
12019365
220201
转...day_of_year int_number date
0201935020193502019-12-16
1201936520193652019-12-31
22020120200012020-01-01
小技巧5:如何将分类中出现次数较少的值归为