Ehsan Shaghaei Data Engineering Internship Task Solution

dataeng/Level1/demo-data/1000.csv

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+first_name, last_name, birthts
+Susan, Lee, 612302400000

dataeng/Level1/demo-data/1001.csv

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+first_name, last_name, birthts
+Rosa, Garcia, 670626000000

dataeng/Level1/demo-data/1002.csv

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+first_name, last_name, birthts
+Nathan, Emery, 697237200000

dataeng/Level1/demo-data/1003.csv

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+first_name, last_name, birthts
+Vernon, Evans, 633733200000

dataeng/Level1/demo-data/1004.csv

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+first_name, last_name, birthts
+Maria, Crooks, 1051214400000

dataeng/Level1/demo-data/1005.csv

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+first_name, last_name, birthts
+Sharon, Lang, 700606800000

dataeng/Level1/demo-data/1006.csv

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+first_name, last_name, birthts
+Rick, Mayfield, 412549200000

dataeng/Level1/demo-output/output.csv

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+user_id, first_name, last_name, birthts, img_path
+1006, Rick, Mayfield, 412549200000, /home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/demo-data/1006.png
+1003, Vernon, Evans, 633733200000, /home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/demo-data/1003.png
+1002, Nathan, Emery, 697237200000, /home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/demo-data/1002.png
+1004, Maria, Crooks, 1051214400000, /home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/demo-data/1004.png
+1001, Rosa, Garcia, 670626000000, /home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/demo-data/1001.png
+1005, Sharon, Lang, 700606800000, /home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/demo-data/1005.png
+1000, Susan, Lee, 612302400000, /home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/demo-data/1000.png

dataeng/Level1/image_path_finder.py

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+import pathlib
+from util import *
+
+
+def append_to_csv(output_file, user_id: int, path_to_csv: str, user_png: bool) -> bool:
+    """
+    Given the path to the .csv file and the user id, create the data needed and then
+    append it to output_file/output.csv.
+    :param output_file: path to where the output file should be.
+    :param user_id: user id to be added to the output file.
+    :param path_to_csv: path to the .csv file.
+    :param user_png: is there a photo for this .csv file.
+    :return: true if the output.csv was changed, false if not.
+    """
+    lines = get_csv(output_file + "/output.csv")
+    if not len(lines):
+        lines.append(["user_id", "first_name", "last_name", "birthts", "img_path"])
+    if user_png:
+        jpg_path = path_to_csv[:-4]
+        jpg_path += ".png"
+    else:
+        jpg_path = "None"
+    temp = get_csv(path_to_csv)
+    line_to_write = [str(user_id), *temp[1], jpg_path]
+    for i in range(len(lines)):
+        if lines[i][0] == line_to_write[0]:
+            if lines[i] == line_to_write:
+                return False
+            else:
+                lines[i] = line_to_write
+            break
+    else:
+        lines.append(line_to_write)
+    w = csv.writer(open(output_file + "/output_temp.csv", "w+"))
+    w.writerows(lines)
+    os.remove(output_file + "/output.csv")
+    os.rename(output_file + "/output_temp.csv", output_file + "/output.csv")
+    return True
+
+
+def find_png_and_id(input_path: str) -> (bool, int):
+    """
+    Takes a path to a .csv file and checks if there's a .png file with the same name in the same directory.
+    if the file exists then returns the name of the file (since this is also the user id), if it doesn't exist
+    return -1.
+    :param input_path: path to the .csv file.
+    :return: user id if the file exists or -1 otherwise.
+    """
+    try:
+        user_id = int(pathlib.Path(input_path).stem)
+    except ValueError:
+        return False, -1
+    input_path = input_path[:-4]
+    input_path += ".png"
+    if os.path.isfile(input_path):
+        return True, user_id
+    return False, user_id
+
+
+def process(input_path: str, output_path: str) -> (int, list):
+    """
+    Reads all files in input_path (absolute path). looks for a .png and a .csv files that have the same name and
+    combines them. Stores output in output_path/output.csv.
+    Returns the number of files found and their names.
+    :param input_path: path used for finding the input.
+    :param output_path: path used for finding the output file.
+    :return: number of files found and their names.
+    """
+    if not os.path.exists(os.path.dirname(input_path)):
+        raise ValueError("This directory doesn't exist")
+    count = 0
+    filenames = []
+    for filename in sorted(os.listdir(input_path)):
+        if filename.endswith('.csv'):
+            user_id = find_png_and_id(input_path + "/" + filename)
+            if user_id[1] == -1:
+                continue
+            if append_to_csv(output_path, user_id[1], input_path + "/" + filename, user_id[0]):
+                count += 1
+                filenames.append(pathlib.Path(filename).stem)
+    filenames.sort()
+    return count, filenames
+
+
+if __name__ == "__main__":
+    istr = input("Enter the input absolute path: ")
+    ostr = input("Enter the output absolute path: ")
+    print(process(istr, ostr))

dataeng/Level1/processed_data/output.csv

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+user_id,first_name,last_name,birthts,img_path
+1000,Susan,Lee,612302400000,None
+1001,Rosa,Garcia,670626000000,None
+1002,Nathan,Emery,697237200000,/home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/src-data/1002.png
+1003,Vernon,Evans,633733200000,/home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/src-data/1003.png
+1004,Maria,Crooks,1051214400000,/home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/src-data/1004.png
+1005,Sharon,Lang,700606800000,/home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/src-data/1005.png
+1006,Rick,Mayfield,412549200000,/home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/src-data/1006.png
+1007,Eddie,Baumbach,874526400000,/home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/src-data/1007.png
+1008,Coletta,Haring,768081600000,/home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/src-data/1008.png
+1009,Margaret,Smith,388612800000,/home/ehsan2754/git_workspace/provectus task/provectus-internship-task/Level1/src-data/1009.png
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dataeng/Level1/src-data/1000.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Susan, Lee, 612302400000

dataeng/Level1/src-data/1001.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Rosa, Garcia, 670626000000

dataeng/Level1/src-data/1002.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Nathan, Emery, 697237200000

dataeng/Level1/src-data/1003.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Vernon, Evans, 633733200000

dataeng/Level1/src-data/1004.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Maria, Crooks, 1051214400000

dataeng/Level1/src-data/1005.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Sharon, Lang, 700606800000

dataeng/Level1/src-data/1006.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Rick, Mayfield, 412549200000

dataeng/Level1/src-data/1007.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Eddie, Baumbach, 874526400000

dataeng/Level1/src-data/1008.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Coletta, Haring, 768081600000

dataeng/Level1/src-data/1009.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Margaret, Smith, 388612800000

dataeng/Level1/src-data/1010.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+James, Martin, 879627600000

dataeng/Level1/src-data/1011.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Glen, Martin, 636066000000

dataeng/Level1/src-data/1012.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Debbie, Mooney, 423086400000

dataeng/Level1/src-data/1013.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Shaneka, Cook, 752533200000

dataeng/Level1/src-data/1014.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Kim, Moore, 403218000000

dataeng/Level1/src-data/1015.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Lorraine, Bingham, 891288000000

dataeng/Level1/src-data/1016.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Betty, Partin, 467240400000

dataeng/Level1/src-data/1017.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Lewis, Erickson, 642283200000

dataeng/Level1/src-data/1018.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Jenee, Crouse, 429566400000

dataeng/Level1/src-data/1019.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Wendy, Jarrette, 650145600000

dataeng/Level1/src-data/1020.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Becky, Hanner, 883429200000

dataeng/Level1/src-data/1021.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Ray, Nunes, 352501200000

dataeng/Level1/src-data/1022.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+John, Rose, 919630800000

dataeng/Level1/src-data/1023.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Michael, Diaz, 630277200000

dataeng/Level1/src-data/1024.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+William, Quick, 340059600000

dataeng/Level1/src-data/1025.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Dino, Miller, 1074805200000

dataeng/Level1/src-data/1026.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+James, Henry, 954705600000

dataeng/Level1/src-data/1027.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Gregory, Pittman, 398894400000

dataeng/Level1/src-data/1028.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Martha, Burwell, 503269200000

dataeng/Level1/src-data/1029.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Jimmy, Deane, 947365200000

dataeng/Level1/src-data/1030.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Kathleen, Gittens, 921272400000

dataeng/Level1/src-data/1031.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Sidney, Woods, 865972800000

dataeng/Level1/src-data/1032.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Robert, David, 666997200000

dataeng/Level1/src-data/1033.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Jeanne, Shoup, 1018468800000

dataeng/Level1/src-data/1034.csv

@@ -0,0 +1,2 @@
+first_name, last_name, birthts
+Brenda, Croyle, 788302800000