Background
I have the following sample df
that contains PHYSICIAN
in the Text
column followed by the physician name (all names below are made up)
import pandas as pd
df = pd.DataFrame({'Text' : ['PHYSICIAN: Jon J Smith was here today',
'And Mary Lisa Rider found here',
'Her PHYSICIAN: Jane A Doe is also here',
' She was seen by PHYSICIAN: Tom Tucker '],
'P_ID': [1,2,3,4],
'N_ID' : ['A1', 'A2', 'A3', 'A4']
})
#rearrange columns
df = df[['Text','N_ID', 'P_ID']]
df
Text N_ID P_ID
0 PHYSICIAN: Jon J Smith was here today A1 1
1 And Mary Lisa Rider found here A2 2
2 Her PHYSICIAN: Jane A Doe is also here A3 3
3 She was seen by PHYSICIAN: Tom Tucker A4 4
Goal
1) Replace the names that follow the word PHYSICIAN
(eg PHYSICIAN: Jon J Smith
) with PHYSICIAN: **PHI**
2) Create a new column named Text_Phys
Desired Output
Text N_ID P_ID Text_Phys
0 PHYSICIAN: Jon J Smith was here today A1 1 PHYSICIAN: **PHI** was here today
1 And Mary Lisa Rider found here A2 2 And Mary Lisa Rider found here
2 Her PHYSICIAN: Jane A Doe is also here A3 3 Her PHYSICIAN: **PHI** is also here
3 She was seen by PHYSICIAN: Tom Tucker A4 4 She was seen by PHYSICIAN: **PHI**
I have tried the following
1) df['Text_Phys'] = df['Text'].replace(r'MRN.*', 'MRN: ***PHI***', regex=True)
2) df['Text_Phys'] = df['Text'].replace(r'MRN\\s+', 'MRN: ***PHI***', regex=True)
But they don't seem to quite work
Question
How do I achieve my desired output?
Try this: Use regex to define the words you want to match and where you want to stop the search ( you could generate a list of all words occurring after "** " to further automate the code). instead of the quick hard code I did "Found|was |is " for sake of time.
code below:
import pandas as pd
df = pd.DataFrame({'Text' : ['PHYSICIAN: Jon J Smith was here today',
'And his Physician: Mary Lisa Rider found here',
'Her PHYSICIAN: Jane A Doe is also here',
' She was seen by PHYSICIAN: Tom Tucker '],
'P_ID': [1,2,3,4],
'N_ID' : ['A1', 'A2', 'A3', 'A4']
})
df = df[['Text','N_ID', 'P_ID']]
df
Text N_ID P_ID
0 PHYSICIAN: Jon J Smith was here today A1 1
1 And his Physician: Mary Lisa Rider found here A2 2
2 Her PHYSICIAN: Jane A Doe is also here A3 3
3 She was seen by PHYSICIAN: Tom Tucker A4 4
word_before = r'PHYSICIAN:'
words_after = r'.*?(?=found |was |is )'
words_all =r'PHYSICIAN:[\w\s]+'
import re
pattern = re.compile(word_before+words_after, re.IGNORECASE)
pattern2 = re.compile(words_all, re.IGNORECASE)
for i in range(len(df['Text'])):
df.iloc[i,0] = re.sub(pattern,"PHYSICIAN: **PHI** ", df["Text"][i])
if 'PHYSICIAN: **PHI**' not in df.iloc[i,0]:
df.iloc[i,0] = re.sub(pattern2,"PHYSICIAN: **PHI** ", df["Text"][i])
df
Text N_ID P_ID
0 PHYSICIAN: **PHI** was here today A1 1
1 And his PHYSICIAN: **PHI** found here A2 2
2 Her PHYSICIAN: **PHI** is also here A3 3
3 She was seen by PHYSICIAN: **PHI** A4 4
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