使用python從文本文件中提取數據列

Question

我想從文本文件中提取一列數據。

的文本文件，我有如下:(總時間/頻率是我想的是下提取數列！）

Abaqus/Standard 6.14-1     DATE 07-Apr-2017 TIME 02:58:26 
SUMMARY OF JOB INFORMATION: 
STEP INC ATT SEVERE EQUIL TOTAL TOTAL  STEP  INC OF  DOF IF 
       DISCON ITERS ITERS TIME/ TIME/LPF TIME/LPF MONITOR RIKS 
       ITERS    FREQ 
    1  1 1  3 10 13 0.0100  0.0100  0.01000 
    1  2 1U 1  4  5 0.0100  0.0100  0.01000 
    1  2 2  2  3  5 0.0125  0.0125  0.002500 
    1  3 1  1  4  5 0.0150  0.0150  0.002500 
    1  4 1  2  4  6 0.0188  0.0188  0.003750 
    1  5 1  2  5  7 0.0244  0.0244  0.005625 
    1  6 1  2  3  5 0.0300  0.0300  0.005625 

你能告訴我怎麼用Python語言編寫的代碼可以提取數字，然後獲得如下的數字列表？

[0.0100,0.0100,0.0125,0.0150,0.0188,0.0244,0.0300] 

Answer 1

此腳本應該有所幫助。我已經評論說明每行代碼可以幫助您調整您希望創建的其他腳本的內容。

# A function to check if a value is an integer 
def RepresentsInt(s): 
    try: 
     int(s) 
     return True 
    except ValueError: 
     return False 


#create empty output list 
StepTimes = [] 

#open the text file 
file1 = open('datFile.dat','r') 

#read the text file line by line 
for line in file1: 

    #split file into a list 
    line = line.split() 
    #check if first item in list is an integer 
    if RepresentsInt(line[0]): 
     #append step time to a new list 
     StepTimes.append(line[6]) 

print (StepTimes) 

這將返回

['0.0100', '0.0100', '0.0125', '0.0150', '0.0188', '0.0244', '0.0300']