Pandas DataFrame [cell=(label,value)], Split Into 2 Separate Dataframes

I found an awesome way to parse html with pandas. My data is in kind of a weird format (attached below). I want to split this data into 2 separate dataframes. Notice how each c

Solution 1:

you can do it this way:

DF1:

In [182]: df1 = DF_freqSpecies.replace(r'\s*\(\d+\.*\d*\)', '', regex=True)

In [183]: df1.head()
Out[183]:
0 Tropical Western Atlantic California, Pacific Northwest and Alaska  \
0                  Bluehead                          Copper Rockfish
1                 Blue Tang                                  Lingcod
2      Stoplight Parrotfish                        Painted Greenling
3        Bicolor Damselfish                           Sunflower Star
4              French Grunt                          Plumose Anemone

0                      Hawaii Tropical Eastern Pacific  \
0               Saddle Wrasse           King Angelfish
1  Hawaiian Whitespotted Toby          Mexican Hogfish
2       Raccoon Butterflyfish               Barberfish
3            Manybar Goatfish            Flag Cabrilla
4                Moorish Idol   Panamic Sergeant Major

0              South Pacific Northeast US and Eastern Canada  \
0            Regal Angelfish                          Cunner
1  Bluestreak Cleaner Wrasse                 Winter Flounder
2           Manybar Goatfish                     Rock Gunnel
3             Brushtail Tang                         Pollock
4       Two-spined Angelfish                  Grubby Sculpin

0 South Atlantic States       Central Indo-Pacific
0         Slippery Dick               Moorish Idol
1       Belted Sandfish       Three-spot Dascyllus
2        Black Sea Bass  Bluestreak Cleaner Wrasse
3               Tomtate     Blacklip Butterflyfish
4                Cubbyu        Clark's Anemonefish

and DF2

In [193]: df2 = DF_freqSpecies.replace(r'.*\((\d+\.*\d*)\).*', r'\1', regex=True)

In [194]: df2.head()
Out[194]:
0 Tropical Western Atlantic California, Pacific Northwest and Alaska Hawaii  \
0                        85                                     54.6     92
1                      84.8                                     53.2   85.8
2                        81                                     50.8   85.7
3                      79.9                                     50.2   85.7
4                      74.8                                     49.7   82.9

0 Tropical Eastern Pacific South Pacific Northeast US and Eastern Canada  \
0                     85.7            79                            67.4
1                     82.5          77.3                            46.6
2                     75.2          73.9                            26.2
3                     68.9          73.3                            25.2
4                     67.9          72.8                            23.7

0 South Atlantic States Central Indo-Pacific
0                  79.7                 80.1
1                  78.5                 75.6
2                  78.5                 73.5
3                  72.7                 71.4
4                  65.7                 70.2

RegEx debugging and explanation:

we basically want to remove everything, except number in parentheses:

(\d+\.*\d*) - group(1) - it's our number

\((\d+\.*\d*)\) - our number in parentheses

.*\((\d+\.*\d*)\).* - the whole thing - anything before '(', '(', our number, ')', anything till the end of the cell

it will be replaced with the group(1) - our number